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Lee HJ, Choi JW. Association between waist circumference change after smoking cessation and incidence of hypertension in Korean adults. Public Health 2024; 229:73-79. [PMID: 38402666 DOI: 10.1016/j.puhe.2024.01.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 12/14/2023] [Accepted: 01/26/2024] [Indexed: 02/27/2024]
Abstract
OBJECTIVES This study investigates the association between smoking cessation and hypertension incidence, as well as the association between waist circumference change after smoking cessation and hypertension incidence. STUDY DESIGN This was a nationwide population-based cohort study. METHODS We used the Korean Health Screening Cohort data and included 158,505 participants who had undergone two or more health examinations between 2008 and 2011, with follow-ups throughout 2019. Smoking cessation and waist changes were captured based on difference between first and follow-up screening dates. Hazard ratio (HR) and 95% confidence interval (CI) for hypertension risk were estimated using multivariable Cox proportional hazard regression models. RESULTS There were 31,270 cases of hypertension during a median follow-up of 8.50 years. After adjusting for potential confounding factors, HR for hypertension were 1.01 (95% CI: 0.97-1.05), 0.91 (95% CI: 0.87-0.95), and 0.88 (95% CI: 0.85-0.91) for recent quitters, long-term quitters, and non-smokers, respectively, compared with current smokers. HR for hypertension, compared with current smokers, were 0.89 (95% CI: 0.84-0.94), 0.91 (95% CI: 0.85-0.97), and 0.99 (95% CI: 0.91-1.08) for long-term quitters with no waist gain, long-term quitters with waist gain of 0.1-5.0 cm, and long-term quitters with waist gain of ≥5.0 cm, respectively. CONCLUSIONS Long-term smoking cessation was significantly associated with decreased risk of hypertension, and long-term smoking cessation with no waist gain or less than 5.0 cm of waist gain was significantly associated with decreased risk of hypertension. However, more than 5.0 cm of waist gain can attenuate the effect of long-term smoking cessation on lowering the risk of hypertension.
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Affiliation(s)
- H J Lee
- Department of Statistics and Data Science, Yonsei University, Seoul, Republic of Korea
| | - J W Choi
- Health Insurance Research Institute, National Health Insurance Service, Wonju, Republic of Korea.
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Lee T, An J, Chung WJ, Kim H, Cho Y, Song H, Lee H, Kang JH, Choi JW. Non-Electroconductive Polymer Coating on Graphite Mitigating Electrochemical Degradation of PTFE for a Dry-Processed Lithium-Ion Battery Anode. ACS Appl Mater Interfaces 2024; 16:8930-8938. [PMID: 38326747 DOI: 10.1021/acsami.3c18862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Polytetrafluoroethylene (PTFE)-based dry process for lithium-ion batteries is gaining attention as a battery manufacturing scheme can be simplified with drastically reducing environmental damage. However, the electrochemical instability of PTFE in a reducing environment has hampered the realization of the high-performance dry-processed anode. In this study, we present a non-electroconductive and highly ionic-conductive polymer coating on graphite to mitigate the electrochemical degradation of the PTFE binder and minimize the coating resistance. Poly(ethylene oxide) (PEO) and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) coatings on the anode material effectively inhibit the electron transfer from graphite to PTFE, thereby alleviating the PTFE breakdown. The graphite polymer coatings improved initial Coulombic efficiencies of full cells from 67.2% (bare) to 79.1% (PEO) and 77.8% (P(VDF-TrFE-CFE)) and increased initial discharge capacity from 157.7 mAh g(NCM)-1 (bare) to 185.1 mAh g(NCM)-1 (PEO) and 182.5 mAh g(NCM)-1 (P(VDF-TrFE-CFE)) in the full cells. These outcomes demonstrate that PTFE degradation in the anode can be surmounted by adjusting the electron transfer to the PTFE.
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Affiliation(s)
- Taegeun Lee
- School of Chemical and Biological Engineering and the Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jiwoo An
- School of Chemical and Biological Engineering and the Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Woo Jun Chung
- School of Chemical and Biological Engineering and the Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyuntae Kim
- School of Chemical and Biological Engineering and the Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yongil Cho
- Battery Manufacturing Engineering R&D Team, Kia Corporation, 37 Cheoldobangmulgwan-ro, Uiwang-si 16082, Gyeonggi-do, Republic of Korea
| | - Hannah Song
- Battery Manufacturing Engineering R&D Team, Hyundai Motor Company, 37 Cheoldobangmulgwan-ro, Uiwang-si 16082, Gyeonggi-do, Republic of Korea
| | - Hyeonha Lee
- Battery Manufacturing Engineering R&D Team, Kia Corporation, 37 Cheoldobangmulgwan-ro, Uiwang-si 16082, Gyeonggi-do, Republic of Korea
| | - Jong Hun Kang
- School of Chemical and Biological Engineering and the Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and the Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Choi JW, Park JW, Choi WJ. Effects of hip joint kinematics on the effective pelvis stiffness and hip impact force during simulated sideways falls. J Biomech 2024; 162:111885. [PMID: 38039920 DOI: 10.1016/j.jbiomech.2023.111885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
Improved understanding is required on how hip fracture risk is influenced by landing configuration. We examined how hip impact dynamics was affected by hip joint kinematics during simulated sideways falls. Twelve young adults (7 males, 5 females) of mean age 23.5 (SD = 1.5) years, participated in pelvis release experiments. Trials were acquired with the hip flexed 15° and 30° for each of three hip rotations: +15° ("external rotation"), 0°, and -15° ("internal rotation"). During falls, force-deformation data of the pelvis were recorded. Outcome variables included the peak hip impact force (Fexperimental) and effective stiffness of the pelvis (k1st, ksecant, and kms) determined with different methods suggested in literature, and predicted hip impact force during a fall from standing height (F1st, Fsecant and Fms). The two-way repeated-measures ANOVA was used to test whether these variables were associated with hip joint angles. The Fexperimental, ksecant and Fsecant were associated with hip rotation (F = 5.587, p = 0.005; F = 9.278, p < 0.0005; F = 5.778, p = 0.004, respectively), and 15 %, 31 % and 17 % smaller in 15° external than internal rotation (848 versus 998 N; 24.6 versus 35.6 kN/m; 2,637 versus 3,170 N, respectively). However, none of the outcome variables were associated with hip flexion (p > 0.05). Furthermore, there were no interactions between the hip rotation and flexion for all outcome variables (p > 0.05). Our results provide insights on hip impact dynamics, which may help improve a hip model to assess hip fracture risk during a fall.
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Affiliation(s)
- J W Choi
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, Wonju, Gangwon-do, South Korea
| | - J W Park
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, Wonju, Gangwon-do, South Korea
| | - W J Choi
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, Wonju, Gangwon-do, South Korea.
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Park SM, Yoon HG, Lee DB, Choi JW, Kwon HY, Won C. Topological magnetic structure generation using VAE-GAN hybrid model and discriminator-driven latent sampling. Sci Rep 2023; 13:20377. [PMID: 37989882 PMCID: PMC10663506 DOI: 10.1038/s41598-023-47866-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/19/2023] [Indexed: 11/23/2023] Open
Abstract
Recently, deep generative models using machine intelligence are widely utilized to investigate scientific systems by generating scientific data. In this study, we experiment with a hybrid model of a variational autoencoder (VAE) and a generative adversarial network (GAN) to generate a variety of plausible two-dimensional magnetic topological structure data. Due to the topological properties in the system, numerous and diverse metastable magnetic structures exist, and energy and topological barriers separate them. Thus, generating a variety of plausible spin structures avoiding those barrier states is a challenging problem. The VAE-GAN hybrid model can present an effective approach to this problem because it brings the advantages of both VAE's diversity and GAN's fidelity. It allows one to perform various applications including searching a desired sample from a variety of valid samples. Additionally, we perform a discriminator-driven latent sampling (DDLS) using our hybrid model to improve the quality of generated samples. We confirm that DDLS generates various plausible data with large coverage, following the topological rules of the target system.
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Affiliation(s)
- S M Park
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - H G Yoon
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - D B Lee
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
- Department of Battery-Smart Factory, Korea University, Seoul, 02841, South Korea
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - H Y Kwon
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
| | - C Won
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea.
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Hwang I, Kim DU, Choi JW, Yoo DJ. Toward Practical Multivalent Ion Batteries with Quinone-Based Organic Cathodes. ACS Appl Mater Interfaces 2023. [PMID: 37970790 DOI: 10.1021/acsami.3c11270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Multivalent ion batteries have emerged as promising solutions to meet the future demands of energy storage applications, offering not only high energy density but also diverse socio-economic advantages. Among the various options for cathodes, quinone-based organic compounds have gained attention as suitable active materials for multivalent ion batteries due to their well-aligned ion channels, flexible structures, and competitive electrochemical performance. However, the charge carriers associated with anions that are often exploited in multivalent ion battery systems operate by way of a "non-rocking-chair" mechanism, which requires the use of an excess amount of electrolyte and results in a significant decrease in the energy density. In this review, by categorizing the various charge carriers exploited in previous studies on multivalent ion batteries, we summarize recently reported quinone-based organic cathodes for multivalent ion batteries and emphasize the importance of accurately identifying the charge carriers for calculating the energy density. We also propose potential future directions toward the practical realization of multivalent ion batteries, in link with their efficient energy storage applications.
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Affiliation(s)
- Insu Hwang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1-Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Dong-Uk Kim
- School of Mechanical Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1-Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Dong-Joo Yoo
- School of Mechanical Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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Chang B, Yun DH, Hwang I, Seo JK, Kang J, Noh G, Choi S, Choi JW. Carrageenan as a Sacrificial Binder for 5 V LiNi 0.5 Mn 1.5 O 4 Cathodes in Lithium-Ion Batteries. Adv Mater 2023; 35:e2303787. [PMID: 37466919 DOI: 10.1002/adma.202303787] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/20/2023]
Abstract
5 V-class LiNi0.5 Mn1.5 O4 (LNMO) with its spinel symmetry is a promising cathode material for lithium-ion batteries. However, the high-voltage operation of LNMO renders it vulnerable to interfacial degradation involving electrolyte decomposition, which hinders long-term and high-rate cycling. Herein, this longstanding challenge presented by LNMO is overcome by incorporating a sacrificial binder, namely, λ-carrageenan (CRN), a sulfated polysaccharide. This binder not only uniformly covers the LNMO surface via hydrogen bonding and ion-dipole interaction but also offers an ionically conductive cathode-electrolyte interphase layer containing LiSOx F, a product of the electrochemical decomposition of the sulfate group. Taking advantage of these two auspicious properties, the CRN-based electrode exhibits cycling and rate performance far superior to that of its counterparts based on the conventional poly(vinylidene difluoride) and sodium alginate binders. This study introduces a new concept, namely "sacrificial" binder, for battery electrodes known to deliver superior electrochemical performance but be adversely affected by interfacial instability.
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Affiliation(s)
- Barsa Chang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1-Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Dae Hui Yun
- Gwangju Clean Energy Research Center, Korea Institute of Energy Research (KIER), 270-25 Samso-ro, Buk-gu, Gwangju, 61003, Republic of Korea
| | - Insu Hwang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1-Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Joon Kyo Seo
- Gwangju Clean Energy Research Center, Korea Institute of Energy Research (KIER), 270-25 Samso-ro, Buk-gu, Gwangju, 61003, Republic of Korea
| | - Joonhee Kang
- Computational Science & Engineering Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon, 34129, Republic of Korea
| | - Gyeongho Noh
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1-Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Sunghun Choi
- Gwangju Clean Energy Research Center, Korea Institute of Energy Research (KIER), 270-25 Samso-ro, Buk-gu, Gwangju, 61003, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1-Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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7
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Kim S, Park G, Lee SJ, Seo S, Ryu K, Kim CH, Choi JW. Lithium-Metal Batteries: From Fundamental Research to Industrialization. Adv Mater 2023; 35:e2206625. [PMID: 36103670 DOI: 10.1002/adma.202206625] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Lithium-metal batteries (LMBs) are representative of post-lithium-ion batteries with the great promise of increasing the energy density drastically by utilizing the low operating voltage and high specific capacity of metallic lithium. LMBs currently stand at a point of transition at which the accumulation of knowledge from fundamental research is being translated into large-scale commercialization. This review summarizes the available strategies for addressing the intrinsic shortcomings of LMBs, such as the suppression of dendritic growth and parasitic reactions from the material to the electrode to the cell level. The discussion pertaining to the cell level includes efforts and concerns relating to scaling up established knowledge and expertise with the view of commercialization. This review intends to encourage researchers in both fundamental research institutions and industry to make a synergistic effort and share their views comprehensively to ensure that LMB technology continues to evolve in harmony to become a mature technology.
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Affiliation(s)
- Sujin Kim
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Gyuleen Park
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seung Jong Lee
- R&D Division, Hyundai Motors Company, 37, Cheoldobangmulgwan-ro, Uiwang-Si, Gyeonggi-do, 16082, Republic of Korea
| | - Samuel Seo
- R&D Division, Hyundai Motors Company, 37, Cheoldobangmulgwan-ro, Uiwang-Si, Gyeonggi-do, 16082, Republic of Korea
| | - Kyounghan Ryu
- R&D Division, Hyundai Motors Company, 37, Cheoldobangmulgwan-ro, Uiwang-Si, Gyeonggi-do, 16082, Republic of Korea
| | - Chang Hwan Kim
- R&D Division, Hyundai Motors Company, 37, Cheoldobangmulgwan-ro, Uiwang-Si, Gyeonggi-do, 16082, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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Lee N, Lee J, Lee T, Oh J, Hwang I, Seo G, Kim H, Choi JW. Rationally Designed Solution-Processible Conductive Carbon Additive Coating for Sulfide-based All-Solid-State Batteries. ACS Appl Mater Interfaces 2023; 15:34931-34940. [PMID: 37458421 DOI: 10.1021/acsami.3c05713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Sulfide-based all-solid-state batteries (ASSBs) have emerged as promising candidates for next-generation energy storage systems owing to their superior safety and energy density. A conductive agent is necessarily added in the cathode composite of ASSBs to facilitate electron transport therein, but it causes the decomposition of the solid electrolyte and ultimately the shortening of lifetime. To resolve this dilemmatic situation, herein, we report a rationally designed solution-processible coating of zinc oxide (ZnO) onto vapor-grown carbon fiber as a conductive agent to reduce the contact between the carbon additive and the solid electrolyte and still maintain electron pathways to the active material. ASSBs with the carbon additive with an optimal coating of ZnO have markedly improved cycling performance and rate capability compared to those with the bare conductive agent, which can be attributed to hindering the decomposition of the solid electrolytes. The results highlight the usefulness of controlling the interparticle contacts in the composite cathodes in addressing the challenging interfacial degradation of sulfide-based ASSBs and improving their key electrochemical properties.
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Affiliation(s)
- Nohjoon Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jieun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Taegeun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jihoon Oh
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Insu Hwang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Gyuwon Seo
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyuntae Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Lee DB, Yoon HG, Park SM, Choi JW, Chen G, Kwon HY, Won C. Super-resolution of magnetic systems using deep learning. Sci Rep 2023; 13:11526. [PMID: 37460591 DOI: 10.1038/s41598-023-38335-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/06/2023] [Indexed: 07/20/2023] Open
Abstract
We construct a deep neural network to enhance the resolution of spin structure images formed by spontaneous symmetry breaking in the magnetic systems. Through the deep neural network, an image is expanded to a super-resolution image and reduced to the original image size to be fitted with the input feed image. The network does not require ground truth images in the training process. Therefore, it can be applied when low-resolution images are provided as training datasets, while high-resolution images are not obtainable due to the intrinsic limitation of microscope techniques. To show the usefulness of the network, we train the network with two types of simulated magnetic structure images; one is from self-organized maze patterns made of chiral magnetic structures, and the other is from magnetic domains separated by walls that are topological defects of the system. The network successfully generates high-resolution images highly correlated with the exact solutions in both cases. To investigate the effectiveness and the differences between datasets, we study the network's noise tolerance and compare the networks' reliabilities. The network is applied with experimental data obtained by magneto-optical Kerr effect microscopy and spin-polarized low-energy electron microscopy.
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Affiliation(s)
- D B Lee
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
- Department of Battery-Smart Factory, Korea University, Seoul, 02841, South Korea
| | - H G Yoon
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - S M Park
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - G Chen
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China
| | - H Y Kwon
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
| | - C Won
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea.
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Kim M, Lee J, Kim Y, Park Y, Kim H, Choi JW. Surface Overpotential as a Key Metric for the Discharge-Charge Reversibility of Aqueous Zinc-Ion Batteries. J Am Chem Soc 2023. [PMID: 37436721 DOI: 10.1021/jacs.3c01614] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Aqueous zinc-ion batteries (AZIBs) are receiving increasing attention for power-grid energy storage systems. Nevertheless, warranting long-term reversible operation is not trivial owing to uncontrolled interfacial phenomena related to zinc dendritic growth and parasitic reactions. Herein, the addition of hexamethylphosphoramide (HMPA) to the electrolyte revealed the surface overpotential (|ηs|) to be a key metric of the reversibility. HMPA adsorbs onto active sites on the zinc metal surface, raising the surface overpotential toward lowering the nucleation energy barrier and decreasing the critical size (rcrit) of nuclei. We also correlated the observed interface-to-bulk properties by the Wagner (Wa) dimensionless number. The controlled interface enables a Zn|V6O13 full cell to retain 75.97% capacity for 2000 cycles, with a capacity loss of only 1.5% after 72 h resting. Our study not only delivers AZIBs with unparalleled cycling and storage performance but also proposes surface overpotential as a key descriptor regarding the sustainability of AZIB cycling and storage.
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Affiliation(s)
- Minkwan Kim
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jimin Lee
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yangmoon Kim
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Youngbin Park
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Heejin Kim
- Division of Analytical Science, Korea Basic Science Institute, 169-148 Gwahak-ro, Daejeon 34133, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Zhao Y, Zhou T, Mensi M, Choi JW, Coskun A. Electrolyte engineering via ether solvent fluorination for developing stable non-aqueous lithium metal batteries. Nat Commun 2023; 14:299. [PMID: 36653353 PMCID: PMC9849263 DOI: 10.1038/s41467-023-35934-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 01/09/2023] [Indexed: 01/19/2023] Open
Abstract
Fluorination of ether solvents is an effective strategy to improve the electrochemical stability of non-aqueous electrolyte solutions in lithium metal batteries. However, excessive fluorination detrimentally impacts the ionic conductivity of the electrolyte, thus limiting the battery performance. Here, to maximize the electrolyte ionic conductivity and electrochemical stability, we introduce the targeted trifluoromethylation of 1,2-dimethoxyethane to produce 1,1,1-trifluoro-2,3-dimethoxypropane (TFDMP). TFDMP is used as a solvent to prepare a 2 M non-aqueous electrolyte solution comprising bis(fluorosulfonyl)imide salt. This electrolyte solution shows an ionic conductivity of 7.4 mS cm-1 at 25 °C, an oxidation stability up to 4.8 V and an efficient suppression of Al corrosion. When tested in a coin cell configuration at 25 °C using a 20 μm Li metal negative electrode, a high mass loading LiNi0.8Co0.1Mn0.1O2-based positive electrode (20 mg cm-2) with a negative/positive (N/P) capacity ratio of 1, discharge capacity retentions (calculated excluding the initial formation cycles) of 81% after 200 cycles at 0.1 A g-1 and 88% after 142 cycles at 0.2 A g-1 are achieved.
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Affiliation(s)
- Yan Zhao
- grid.8534.a0000 0004 0478 1713Department of Chemistry, University of Fribourg, Fribourg, 1700 Switzerland
| | - Tianhong Zhou
- grid.8534.a0000 0004 0478 1713Department of Chemistry, University of Fribourg, Fribourg, 1700 Switzerland
| | - Mounir Mensi
- grid.5333.60000000121839049Institute of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne, Sion, 1950 Switzerland
| | - Jang Wook Choi
- grid.31501.360000 0004 0470 5905School of Chemical and Biological Engineering, Department of materials science and engineering, and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Republic of Korea
| | - Ali Coskun
- grid.8534.a0000 0004 0478 1713Department of Chemistry, University of Fribourg, Fribourg, 1700 Switzerland
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12
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Zhao Y, Zhou T, Jeurgens LP, Kong X, Choi JW, Coskun A. Electrolyte engineering for highly inorganic solid electrolyte interphase in high-performance lithium metal batteries. Chem 2023. [DOI: 10.1016/j.chempr.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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13
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Han JW, Park BK, Yang SY, Lee J, Mun J, Choi JW, Kim KJ. Hierarchically Porous Ferroelectric Layer with the Aligned Dipole Moment for a High-Performance Aqueous Zn Metal Battery. ACS Appl Mater Interfaces 2022; 14:48570-48581. [PMID: 36269027 DOI: 10.1021/acsami.2c11172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Rechargeable aqueous Zn metal batteries (AZMBs) are desirable because of the advantages of metallic Zn and aqueous media. However, AZMBs suffer from limited cyclability and low Coulombic efficiency, originating from uncontrolled dendrite growth and side reactions such as hydrogen gas evolution and corrosion. A hierarchically porous poly(vinylidene difluoride) (PVDF) protection layer with ferroelectric β-phases is formed on the Zn metal using a simple electrospinning method. This suppresses Zn metal failure modes such as side reactions and dendrite growth and supports rapid electrolyte accessibility. The synergetic effect of hierarchically porous structures and ferroelectricity not only facilitates a supporting matrix to form uniform nucleation sites for Zn deposition but also inhibits corrosion, allowing dendrite-free Zn deposition. This multifunctional PVDF film significantly improves the cyclability of Zn symmetric cells, allowing for up to 850 h of repeated plating/stripping cycles. Moreover, it exhibits an excellent cycle life of 1000 cycles under harsh conditions and high current densities of 4.0-10.0 mA cm-2, which are 62-fold higher than those that the bare Zn electrode tolerates.
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Affiliation(s)
- Ji Woo Han
- Department of Energy Engineering, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul05029, Republic of Korea
| | - Bo Keun Park
- Department of Energy Engineering, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul05029, Republic of Korea
| | - So Yeon Yang
- Department of Energy Engineering, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul05029, Republic of Korea
| | - Jimin Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul08826, Republic of Korea
| | - Junyoung Mun
- School of Advanced Materials Science & Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do16419, Republic of Korea
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do16419, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul08826, Republic of Korea
| | - Ki Jae Kim
- Department of Energy Engineering, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul05029, Republic of Korea
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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14
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Kim MK, Shin S, Lee JM, Park YB, Kim YM, Kim HJ, Choi JW. Cationic Additive with a Rigid Solvation Shell for High‐Performance Zinc Ion Batteries. Angew Chem Int Ed Engl 2022; 61:e202211589. [DOI: 10.1002/anie.202211589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Minkwan K. Kim
- School of Chemical and Biological Engineering and Institute of Chemical Process Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Seung‐Jae Shin
- Department of Chemistry Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
| | - Jimin M. Lee
- School of Chemical and Biological Engineering and Institute of Chemical Process Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Youngbin B. Park
- School of Chemical and Biological Engineering and Institute of Chemical Process Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Yangmoon M. Kim
- School of Chemical and Biological Engineering and Institute of Chemical Process Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Hyungjun J. Kim
- Department of Chemistry Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Process Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
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15
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Lee J, Choi SH, Im G, Lee KJ, Lee T, Oh J, Lee N, Kim H, Kim Y, Lee S, Choi JW. Room-Temperature Anode-Less All-Solid-State Batteries via the Conversion Reaction of Metal Fluorides. Adv Mater 2022; 34:e2203580. [PMID: 35953451 DOI: 10.1002/adma.202203580] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/31/2022] [Indexed: 06/15/2023]
Abstract
All-solid-state batteries (ASSBs) that employ anode-less electrodes have drawn attention from across the battery community because they offer competitive energy densities and a markedly improved cycle life. Nevertheless, the composite matrices of anode-less electrodes impose a substantial barrier for lithium-ion diffusion and inhibit operation at room temperature. To overcome this drawback, here, the conversion reaction of metal fluorides is exploited because metallic nanodomains formed during this reaction induce an alloying reaction with lithium ions for uniform and sustainable lithium (de)plating. Lithium fluoride (LiF), another product of the conversion reaction, prevents the agglomeration of the metallic nanodomains and also protects the electrode from fatal lithium dendrite growth. A systematic analysis identifies silver (I) fluoride (AgF) as the most suitable metal fluoride because the silver nanodomains can accommodate the solid-solution mechanism with a low nucleation overpotential. AgF-based full cells attain reliable cycling at 25 °C even with an exceptionally high areal capacity of 9.7 mAh cm-2 (areal loading of LiNi0.8 Co0.1 Mn0.1 O2 = 50 mg cm-2 ). These results offer useful insights into designing materials for anode-less electrodes for sulfide-based ASSBs.
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Affiliation(s)
- Jieun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seung Ho Choi
- Advanced Battery Development Team, Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Namyang-eup, Hwaseong-si, Gyeonggi-do, 18280, Republic of Korea
| | - Gahyeon Im
- Advanced Battery Development Team, Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Namyang-eup, Hwaseong-si, Gyeonggi-do, 18280, Republic of Korea
| | - Kyu-Joon Lee
- Advanced Battery Development Team, Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Namyang-eup, Hwaseong-si, Gyeonggi-do, 18280, Republic of Korea
| | - Taegeun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jihoon Oh
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Nohjoon Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Hyuntae Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yunsung Kim
- Advanced Battery Development Team, Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Namyang-eup, Hwaseong-si, Gyeonggi-do, 18280, Republic of Korea
| | - Sangheon Lee
- Advanced Battery Development Team, Hyundai Motor Company, 150, Hyundaiyeonguso-ro, Namyang-eup, Hwaseong-si, Gyeonggi-do, 18280, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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16
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Kim M, Shin SJ, Lee J, Park Y, Kim Y, Kim H, Choi JW. Cationic Additive with a Rigid Solvation Shell for High‐Performance Zinc Ion Batteries. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Minkwan Kim
- Seoul National University Chemical and biological Engineering 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea ASI KR KS013 SEOUL Seoul KOREA, REPUBLIC OF
| | - Seung-Jae Shin
- Korea Advanced Institute of Science and Technology Department of Chemistry KOREA, REPUBLIC OF
| | - Jimin Lee
- Seoul National University Chemical and biological Engineering KOREA, REPUBLIC OF
| | - Youngbin Park
- Seoul National University Chemical and biological Engineering KOREA, REPUBLIC OF
| | - Yangmoon Kim
- Seoul National University Chemical and biological Engineering KOREA, REPUBLIC OF
| | - Hyungjun Kim
- Korea Advanced Institute of Science and Technology Department of Chemistry KOREA, REPUBLIC OF
| | - Jang Wook Choi
- Seoul National University Chemical and Biological Engineering 1 Gwanak-ro, Gwanak-gu 08826 Seoul KOREA, REPUBLIC OF
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17
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Kim J, Baek M, Park K, Park Y, Hwang I, Choi JW. Effect of ionotropic gelation of COOH-functionalized polymeric binders in multivalent ion batteries. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05256-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Han M, Choi JW, Jung WS, Lee JS. Isolated posterior inferior cerebellar artery dissection with ischaemic stroke: evaluating the radiological features and diagnostic feasibility of high-resolution vessel wall imaging. Clin Radiol 2022; 77:584-591. [PMID: 35676104 DOI: 10.1016/j.crad.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 05/06/2022] [Indexed: 11/29/2022]
Abstract
AIM To evaluate the radiological features of isolated posterior inferior cerebellar artery dissection (PICAD) and the feasibility of using high-resolution vessel-wall imaging (HR-VWI) for diagnosing PICAD. MATERIALS AND METHODS Three hundred and nine patients with arterial dissection involving the posterior cerebral circulation, who underwent HR-VWI between March 2012 and July 2019 were reviewed retrospectively. Among them, 44 patients (14.2%) were diagnosed with isolated PICAD in consensus among a neuroradiologist, a neurointerventionist, and a neurologist. Two neuroradiologists reviewed the vessel wall images independently for evidence of dissection (dissection flap, outer diameter enlargement on T2-weighted imaging [WI], mural haematoma). Diagnostic confidence was also scored on a five-point scale. Intra- and interobserver agreement for diagnosing PICAD and detecting evidence of dissection were evaluated. RESULTS Dissection flaps were seen on T2WI in all cases (100%) and on contrast-enhanced T1WI in 34 patients (79.1%). Outer diameter enlargement of the steno-occlusive lesions on angiography was detected in most cases (97.7%). A mural haematoma was detected on three-dimensional (3D) contrast-enhanced motion-sensitised driven-equilibrium T1WI in 97.1% of the cases. The mean diagnostic confidence score derived by two neuroradiologists was 4.72. The two reviewers showed substantial to almost perfect agreement (weighted kappa coefficient: 0.62-0.97). CONCLUSION Use of HR-VWI as a diagnostic tool for PICAD is feasible, and a dissection flap with outer wall enlargement on HR-T2WI allows confident dissection diagnosis. The present data suggest that PICAD might be considered as a stroke aetiology in patients with unexplained ischaemic stroke in the PICA territory, and that PICA evaluation with HR-VWI is both necessary and feasible.
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Affiliation(s)
- M Han
- Department of Radiology, Ajou University School of Medicine, Ajou University Hospital, Suwon, Republic of Korea; Department of Radiology, Graduate School of Kangwon National University, Chuncheon, Republic of Korea
| | - J W Choi
- Department of Radiology, Ajou University School of Medicine, Ajou University Hospital, Suwon, Republic of Korea.
| | - W S Jung
- Department of Radiology, Ajou University School of Medicine, Ajou University Hospital, Suwon, Republic of Korea; Department of Radiology, Graduate School of Kangwon National University, Chuncheon, Republic of Korea
| | - J S Lee
- Department of Neurology, Ajou University School of Medicine, Ajou University Hospital, Suwon, Republic of Korea
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19
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Zhao Y, Zhou T, Ashirov T, Kazzi ME, Cancellieri C, Jeurgens LPH, Choi JW, Coskun A. Fluorinated ether electrolyte with controlled solvation structure for high voltage lithium metal batteries. Nat Commun 2022; 13:2575. [PMID: 35523785 PMCID: PMC9076822 DOI: 10.1038/s41467-022-29199-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 02/25/2022] [Indexed: 11/17/2022] Open
Abstract
The development of new solvents is imperative in lithium metal batteries due to the incompatibility of conventional carbonate and narrow electrochemical windows of ether-based electrolytes. Whereas the fluorinated ethers showed improved electrochemical stabilities, they can hardly solvate lithium ions. Thus, the challenge in electrolyte chemistry is to combine the high voltage stability of fluorinated ethers with high lithium ion solvation ability of ethers in a single molecule. Herein, we report a new solvent, 2,2-dimethoxy-4-(trifluoromethyl)-1,3-dioxolane (DTDL), combining a cyclic fluorinated ether with a linear ether segment to simultaneously achieve high voltage stability and tune lithium ion solvation ability and structure. High oxidation stability up to 5.5 V, large lithium ion transference number of 0.75 and stable Coulombic efficiency of 99.2% after 500 cycles proved the potential of DTDL in high-voltage lithium metal batteries. Furthermore, 20 μm thick lithium paired LiNi0.8Co0.1Mn0.1O2 full cell incorporating 2 M LiFSI-DTDL electrolyte retained 84% of the original capacity after 200 cycles at 0.5 C.
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Affiliation(s)
- Yan Zhao
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland
| | - Tianhong Zhou
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland
| | - Timur Ashirov
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland
| | - Mario El Kazzi
- Electrochemistry Laboratory, Paul Scherrer Institut, Villigen, 5232, Switzerland
| | - Claudia Cancellieri
- Laboratory for Joining Technologies and Corrosion, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, Dübendorf, CH, 8600, Switzerland
| | - Lars P H Jeurgens
- Laboratory for Joining Technologies and Corrosion, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, Dübendorf, CH, 8600, Switzerland
| | - Jang Wook Choi
- School of Chemical and Biological Engineering, Department of materials science and engineering, and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
| | - Ali Coskun
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland.
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20
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Zhou T, Zhao Y, El Kazzi M, Choi JW, Coskun A. Integrated Ring-Chain Design of a New Fluorinated Ether Solvent for High-Voltage Lithium-Metal Batteries. Angew Chem Int Ed Engl 2022; 61:e202115884. [PMID: 35274417 PMCID: PMC9314708 DOI: 10.1002/anie.202115884] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Indexed: 11/17/2022]
Abstract
Ether‐based electrolytes offer promising features such as high lithium‐ion solvation power and stable interface, yet their limited oxidation stability impedes application in high‐voltage Li‐metal batteries (LMBs). Whereas the fluorination of the ether backbone improves the oxidative stability, the resulting solvents lose their Li+‐solvation ability. Therefore, the rational molecular design of solvents is essential to combine high redox stability with good ionic conductivity. Here, we report the synthesis of a new high‐voltage fluorinated ether solvent through integrated ring‐chain molecular design, which can be used as a single solvent while retaining high‐voltage stability. The controlled Li+‐solvation environment even at low‐salt‐concentration (1 M or 2 M) enables a uniform and compact Li anode and an outstanding cycling stability in the Li|NCM811 full cell (20 μm Li foil, N/P ratio of 4). These results show the impact of molecular design of electrolytes towards the utilization of LMBs.
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Affiliation(s)
- Tianhong Zhou
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, 1700, Fribourg, Switzerland
| | - Yan Zhao
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, 1700, Fribourg, Switzerland
| | - Mario El Kazzi
- Electrochemistry Laboratory, Paul Scherrer Institut, 5232, Villigen, Switzerland
| | - Jang Wook Choi
- School of Chemical and Biological Engineering, Department of Materials Science and Engineering, and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Ali Coskun
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, 1700, Fribourg, Switzerland
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21
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Kim Y, Park Y, Kim M, Lee J, Kim KJ, Choi JW. Corrosion as the origin of limited lifetime of vanadium oxide-based aqueous zinc ion batteries. Nat Commun 2022; 13:2371. [PMID: 35501314 PMCID: PMC9061739 DOI: 10.1038/s41467-022-29987-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 04/11/2022] [Indexed: 12/24/2022] Open
Abstract
Aqueous zinc ion batteries are receiving increasing attention for large-scale energy storage systems owing to their attractive features with respect to safety, cost, and scalability. Although vanadium oxides with various compositions have been demonstrated to store zinc ions reversibly, their limited cyclability especially at low current densities and their poor calendar life impede their widespread practical adoption. Herein, we reveal that the electrochemically inactive zinc pyrovanadate (ZVO) phase formed on the cathode surface is the main cause of the limited sustainability. Moreover, the formation of ZVO is closely related to the corrosion of the zinc metal counter electrode by perturbing the pH of the electrolyte. Thus, the dissolution of VO2(OH)2−, the source of the vanadium in the ZVO, is no longer prevented. The proposed amalgamated Zn anode improves the cyclability drastically by blocking the corrosion at the anode, verifying the importance of pH control and the interplay between both electrodes. Aqueous zinc ion batteries are good systems for large-scale energy storage. Here, the authors report that the corrosion of zinc metal anode is the origin of limited lifetime of vanadium oxide-based aqueous zinc ion batteries, and supressing corrosion improves the calendar and cycle lifetime markedly.
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22
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Zhou T, Zhao Y, El Kazzi M, Choi JW, Coskun A. Integrated Ring‐Chain Design of a New Fluorinated Ether Solvent for High‐Voltage Lithium‐Metal Batteries. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tianhong Zhou
- Department of Chemistry University of Fribourg Chemin de Musee 9 1700 Fribourg Switzerland
| | - Yan Zhao
- Department of Chemistry University of Fribourg Chemin de Musee 9 1700 Fribourg Switzerland
| | - Mario El Kazzi
- Electrochemistry Laboratory Paul Scherrer Institut 5232 Villigen Switzerland
| | - Jang Wook Choi
- School of Chemical and Biological Engineering Department of Materials Science and Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
| | - Ali Coskun
- Department of Chemistry University of Fribourg Chemin de Musee 9 1700 Fribourg Switzerland
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23
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Moon CH, Yasmeen S, Park K, Gaiji H, Chung C, Kim H, Moon HS, Choi JW, Lee HBR. Icephobic Coating through a Self-Formed Superhydrophobic Surface Using a Polymer and Microsized Particles. ACS Appl Mater Interfaces 2022; 14:3334-3343. [PMID: 34981919 DOI: 10.1021/acsami.1c22404] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Icephobic coatings have been extensively studied for decades to overcome the potential damage associated with ice formation in various devices that are operated under harsh weather conditions. Superhydrophobic surface coatings have been applied for icephobic coating applications owing to their low surface energy. In this study, an icephobic coating of a self-formed superhydrophobic surface using polydimethylsiloxane (PDMS) and SiO2 powder was investigated. The effect of superhydrophobicity on icephobicity was determined by varying the experimental parameters. Polyvinylidene fluoride (PVDF) was added to the PDMS solution to improve the mechanical properties of the icephobic layer. The PDMS-PVDF solution also showed a self-formation behavior into a superhydrophobic surface. In addition, the icephobicity and mechanical properties of the PDMS-PVDF mixture coating improved because of the multilevel nanostructure formed by physical and chemical interactions between the mixture and SiO2 powder. We believe that the proposed approach will be a suitable candidate for various practical applications of icephobicity and a model system to understand the correlation between superhydrophobicity and icephobicity.
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Affiliation(s)
- Chan Hui Moon
- Department of Materials Science & Engineering, Incheon National University, Incheon 22012, South Korea
| | - Sumaira Yasmeen
- Department of Materials Science & Engineering, Incheon National University, Incheon 22012, South Korea
| | - Kiho Park
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Houda Gaiji
- Department of Materials Science & Engineering, Incheon National University, Incheon 22012, South Korea
| | - Changhyun Chung
- Office of Technology Development & Service, Korea Polar Research Institute, Incheon 21990, South Korea
| | - Hyoungkwon Kim
- Office of Technology Development & Service, Korea Polar Research Institute, Incheon 21990, South Korea
| | - Hyoung-Seok Moon
- Energy Plant R&D Group, Korea Institute of Industrial Technology, Busan 31056, South Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Han-Bo-Ram Lee
- Department of Materials Science & Engineering, Incheon National University, Incheon 22012, South Korea
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24
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Lee DB, Yoon HG, Park SM, Choi JW, Kwon HY, Won C. Estimating the effective fields of spin configurations using a deep learning technique. Sci Rep 2021; 11:22937. [PMID: 34824339 PMCID: PMC8616938 DOI: 10.1038/s41598-021-02374-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/15/2021] [Indexed: 11/09/2022] Open
Abstract
The properties of complicated magnetic domain structures induced by various spin-spin interactions in magnetic systems have been extensively investigated in recent years. To understand the statistical and dynamic properties of complex magnetic structures, it is crucial to obtain information on the effective field distribution over the structure, which is not directly provided by magnetization. In this study, we use a deep learning technique to estimate the effective fields of spin configurations. We construct a deep neural network and train it with spin configuration datasets generated by Monte Carlo simulation. We show that the trained network can successfully estimate the magnetic effective field even though we do not offer explicit Hamiltonian parameter values. The estimated effective field information is highly applicable; it is utilized to reduce noise, correct defects in the magnetization data, generate spin configurations, estimate external field responses, and interpret experimental images.
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Affiliation(s)
- D B Lee
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - H G Yoon
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - S M Park
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - H Y Kwon
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
| | - C Won
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea.
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25
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Baek M, Kim J, Jin J, Choi JW. Photochemically driven solid electrolyte interphase for extremely fast-charging lithium-ion batteries. Nat Commun 2021; 12:6807. [PMID: 34815396 PMCID: PMC8611023 DOI: 10.1038/s41467-021-27095-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 10/20/2021] [Indexed: 11/17/2022] Open
Abstract
Extremely fast charging (i.e. 80% of storage capacity within 15 min) is a pressing requirement for current lithium-ion battery technology and also affects the planning of charging infrastructure. Accelerating lithium ion transport through the solid-electrolyte interphase (SEI) is a major obstacle in boosting charging rate; in turn, limited kinetics at the SEI layer negatively affect the cycle life and battery safety as a result of lithium metal plating on the electrode surface. Here, we report a γ-ray-driven SEI layer that allows a battery cell to be charged to 80% capacity in 10.8 min as determined for a graphite full-cell with a capacity of 2.6 mAh cm−2. This exceptional charging performance is attributed to the lithium fluoride-rich SEI induced by salt-dominant decomposition via γ-ray irradiation. This study highlights the potential of non-electrochemical approaches to adjust the SEI composition toward fast charging and long-term stability, two parameters that are difficult to improve simultaneously in typical electrochemical processes owing to the trade-off relation. Extremely fast charging such as charging 80% of capacity within 15 min is a pressing requirement for current lithium-ion battery technology. Here the authors achieve this by incorporating an artificial solid-electrolyte interphase rich in inorganic components on the graphite electrode.
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Affiliation(s)
- Minsung Baek
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Jinyoung Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Jaegyu Jin
- Institute of Battery Technology, SK on, Daejeon, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea. .,Department of Materials Science and Engineering, Seoul National University, Seoul, Republic of Korea.
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Strauss MJ, Hwang I, Evans AM, Natraj A, Aguilar-Enriquez X, Castano I, Roesner EK, Choi JW, Dichtel WR. Lithium-Conducting Self-Assembled Organic Nanotubes. J Am Chem Soc 2021; 143:17655-17665. [PMID: 34648256 DOI: 10.1021/jacs.1c08058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Supramolecular polymers are compelling platforms for the design of stimuli-responsive materials with emergent functions. Here, we report the assembly of an amphiphilic nanotube for Li-ion conduction that exhibits high ionic conductivity, mechanical integrity, electrochemical stability, and solution processability. Imine condensation of a pyridine-containing diamine with a triethylene glycol functionalized isophthalaldehyde yields pore-functionalized macrocycles. Atomic force microscopy, scanning electron microscopy, and in solvo X-ray diffraction reveal that macrocycle protonation during their mild synthesis drives assembly into high-aspect ratio (>103) nanotubes with three interior triethylene glycol groups. Electrochemical impedance spectroscopy demonstrates that lithiated nanotubes are efficient Li+ conductors, with an activation energy of 0.42 eV and a peak room temperature conductivity of 3.91 ± 0.38 × 10-5 S cm-1. 7Li NMR and Raman spectroscopy show that lithiation occurs exclusively within the nanotube interior and implicates the glycol groups in facilitating efficient Li+ transduction. Linear sweep voltammetry and galvanostatic lithium plating-stripping tests reveal that this nanotube-based electrolyte is stable over a wide potential range and supports long-term cyclability. These findings demonstrate how the coupling of synthetic design and supramolecular structural control can yield high-performance ionic transporters that are amenable to device-relevant fabrication, as well as the technological potential of chemically designed self-assembled nanotubes.
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Affiliation(s)
- Michael J Strauss
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Insu Hwang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Austin M Evans
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Anusree Natraj
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | | | - Ioannina Castano
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Emily K Roesner
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - William R Dichtel
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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Zhou T, Zhao Y, Choi JW, Coskun A. Ionic Liquid Functionalized Gel Polymer Electrolytes for Stable Lithium Metal Batteries. Angew Chem Int Ed Engl 2021; 60:22791-22796. [PMID: 34379356 PMCID: PMC8518060 DOI: 10.1002/anie.202106237] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Indexed: 11/17/2022]
Abstract
Metallic lithium (Li) is regarded as the ideal anode material in lithium-ion batteries due to its low electrochemical potential, highest theoretical energy density and low density. There are, however, still significant challenges to be addressed such as Li-dendrite growth and low interfacial stability, which impede the practical application of Li metal anodes. In order to circumvent these shortcomings, herein, we present a gel polymer electrolyte containing imidazolium ionic liquid end groups with a perfluorinated alkyl chain (F-IL) to achieve both high ionic conductivity and Li ion transference number by fundamentally altering the solubility of salt within the gel electrolyte through Lewis-acidic segments in the polymer backbone. Moreover, the presence of F-IL moieties decreased the binding affinity of Li cation towards the glycol chains, enabling a rapid transfer of Li cation within the gel network. These structural features enabled the immobilization of anions on the ionic liquid segments to alleviate the space-charge effect while promoting stronger anion coordination and weaker cation coordination in the Lewis-acidic polymers. Accordingly, we realized a high Li ion conductivity (9.16×10-3 S cm-1 ) and high Li ion transference number of 0.69 simultaneously, along with a good electrochemical stability up to 4.55 V, while effectively suppressing Li dendrite growth. Moreover, the gel polymer electrolyte exhibited stable cycling performance of the Li|Li symmetric cell of 9 mAh cm-2 for more than 1800 hours and retained 86.7 % of the original capacity after 250 cycles for lithium-sulfur (Li-S) full cell.
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Affiliation(s)
- Tianhong Zhou
- Department of ChemistryUniversity of FribourgChemin de Musee 91700FribourgSwitzerland
| | - Yan Zhao
- Department of ChemistryUniversity of FribourgChemin de Musee 91700FribourgSwitzerland
| | - Jang Wook Choi
- School of Chemical and Biological EngineeringDepartment of Materials Science and Engineering, and Institute of Chemical ProcessesSeoul National University1 Gwanak-ro, Gwanak-guSeoul08826Republic of Korea
| | - Ali Coskun
- Department of ChemistryUniversity of FribourgChemin de Musee 91700FribourgSwitzerland
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Affiliation(s)
- Tianhong Zhou
- Department of Chemistry University of Fribourg Chemin de Musee 9 1700 Fribourg Switzerland
| | - Yan Zhao
- Department of Chemistry University of Fribourg Chemin de Musee 9 1700 Fribourg Switzerland
| | - Jang Wook Choi
- School of Chemical and Biological Engineering Department of Materials Science and Engineering, and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Ali Coskun
- Department of Chemistry University of Fribourg Chemin de Musee 9 1700 Fribourg Switzerland
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Abstract
ConspectusAll-solid-state batteries (ASSBs) are considered to be a next-generation energy storage concept that offers enhanced safety and potentially high energy density. The identification of solid electrolytes (SEs) with high ionic conductivity was the stepping-stone that enabled the recent surge in activity in this research area. Among the various types of SEs, including those based on oxides, sulfides, polymers, and hybrids thereof, sulfide-based SEs have gained discernible attention owing to their exceptional room temperature ionic conductivity comparable even to those of their liquid electrolyte counterparts. Moreover, the good deformability of sulfide SEs renders them suitable for reducing the interfacial resistance between particles, thereby obviating the need for high-temperature sintering. Nevertheless, sulfide-based ASSB technology still remains at the research stage without any manufacturing schemes having been established. This state of affairs originates from the complex challenges presented by various aspects of these SEs: their weak stability in air, questions surrounding the exact combination of slurry solvent and polymeric binder for solution-based electrode fabrication, their high interfacial resistance resulting from solid particle contacts, and limited scalability with respect to electrode fabrication and cell assembly. In this Account, we review recent developments in which these issues were addressed by starting with the materials and moving on to processing, focusing on new trials. As for enhancing the air stability of sulfide SEs, strengthening the metal-sulfur bond based on the hard-soft acid-base (HSAB) theory has yielded the most notable results, although the resulting sacrificed energy density and weakened anode interface stability would need to be resolved. Novel electrode fabrication techniques that endeavor to overcome the critical issues originating from the use of sulfide SEs are subsequently introduced. The wet chemical coating process can take advantage of the know-how and facilities inherited from the more established lithium-ion batteries (LIBs). However, the dilemmatic matter of contention relating to the polarity mismatch among the slurry solvent, SE, and binder requires attention. Recent solutions to these problems involved the exploration of various emerging concepts, such as polarity switching during electrode fabrication, fine polarity tuning by accurate grafting, and infiltration of the electrode voids by a solution of the SE. The process of using a dry film with a fibrous binder has also raised interest, motivated by lowering the manufacturing cost, maintaining the environment, and boosting the volumetric energy density. Finally, optimization of the cell assembly and operation is reviewed. In particular, the application of external pressure to each unit cell has been universally adopted both in the fabrication step and during cell operation to realize high cell performance. The effect of pressurization is discussed by correlating it with the interface stability and robust interparticle contacts. Based on the significant progress that has been made thus far, we aim to encourage the battery community to engage their wide-ranging expertise toward advancing sulfide-based ASSBs that are practically feasible.
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Affiliation(s)
- Jieun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Taegeun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Ki Jae Kim
- Department of Energy Engineering, Konkuk University, Neungdong-ro 120, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Jang SH, Sohn SI, Park H, Lee SJ, Kim YW, Hong JM, Kim CH, Choi JW, Kang DH, Kim YS, Hwang YH, Lee JS, Hong JH. The Safety of Intra-arterial Tirofiban during Endovascular Therapy after Intravenous Thrombolysis. AJNR Am J Neuroradiol 2021; 42:1633-1637. [PMID: 34301637 DOI: 10.3174/ajnr.a7203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/07/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The safety and efficacy of tirofiban during endovascular therapy in patients undergoing intravenous thrombolysis with recombinant IV tPA remain unclear. This study aimed to investigate the safety and efficacy of intra-arterial tirofiban use during endovascular therapy in patients treated with IV tPA. MATERIALS AND METHODS Using a multicenter registry, we enrolled patients with acute ischemic stroke who underwent endovascular therapy. Safety outcomes included postprocedural parenchymal hematoma type 2 and/or thick subarachnoid hemorrhage, intraventricular hemorrhage, and 3-month mortality. Efficacy outcomes included the successful reperfusion rate, postprocedural reocclusion, and good outcomes at 3 months (mRS scores of 0-2). The tirofiban effect on the outcomes was evaluated using a multivariable analysis while adjusting for potential confounders. RESULTS Among enrolled patients, we identified 314 patients with stroke (279 and 35 patients in the no tirofiban and tirofiban groups, respectively) due to an intracranial artery occlusion who underwent endovascular therapy with intravenous thrombolysis. A multivariable analysis revealed no association of intra-arterial tirofiban with postprocedural parenchymal hematoma type and/or thick subarachnoid hemorrhage (adjusted OR, 1.07; 95% CI, 0.20-4.10; P = .918), intraventricular hemorrhage (adjusted OR, 0.43; 95% CI, 0.02-2.85; P = .467), and 3-month mortality (adjusted OR, 0.38; 95% CI, 0.04-1.87; P = .299). Intra-arterial tirofiban was not associated with good outcome (adjusted OR, 2.22; 95% CI, 0.89 -6.12; P = .099). CONCLUSIONS Using intra-arterial tirofiban during endovascular therapy after IV tPA could be safe.
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Affiliation(s)
- S H Jang
- From the Departments of Neurology (S.H.J., S.-I.S., H.P., J.-H.H.)
| | - S-I Sohn
- From the Departments of Neurology (S.H.J., S.-I.S., H.P., J.-H.H.)
| | - H Park
- From the Departments of Neurology (S.H.J., S.-I.S., H.P., J.-H.H.)
| | - S-J Lee
- Department of Neurology (S.-J.L., J.M.H., J.S.L.)
| | - Y-W Kim
- Department of Neurology (Y.-W.K., Y.-H.H.)
| | - J M Hong
- Department of Neurology (S.-J.L., J.M.H., J.S.L.)
| | - C-H Kim
- Neurosurgery (C.-H.K.), School of Medicine Keimyung University, Daegu, South Korea
| | - J W Choi
- Radiology (J.W.C.), School of Medicine, Ajou University, Suwon, South Korea
| | | | - Y-S Kim
- Radiology (Y.-S.K.), School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Y-H Hwang
- Department of Neurology (Y.-W.K., Y.-H.H.)
| | - J S Lee
- Department of Neurology (S.-J.L., J.M.H., J.S.L.)
| | - J-H Hong
- From the Departments of Neurology (S.H.J., S.-I.S., H.P., J.-H.H.)
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Kim J, Park K, Cho Y, Shin H, Kim S, Char K, Choi JW. Zn 2+-Imidazole Coordination Crosslinks for Elastic Polymeric Binders in High-Capacity Silicon Electrodes. Adv Sci (Weinh) 2021; 8:2004290. [PMID: 33977065 PMCID: PMC8097348 DOI: 10.1002/advs.202004290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Recent research has built a consensus that the binder plays a key role in the performance of high-capacity silicon anodes in lithium-ion batteries. These anodes necessitate the use of a binder to maintain the electrode integrity during the immense volume change of silicon during cycling. Here, Zn2+-imidazole coordination crosslinks that are formed to carboxymethyl cellulose backbones in situ during electrode fabrication are reported. The recoverable nature of Zn2+-imidazole coordination bonds and the flexibility of the poly(ethylene glycol) chains are jointly responsible for the high elasticity of the binder network. The high elasticity tightens interparticle contacts and sustains the electrode integrity, both of which are beneficial for long-term cyclability. These electrodes, with their commercial levels of areal capacities, exhibit superior cycle life in full-cells paired with LiNi0.8Co0.15Al0.05O2 cathodes. The present study underlines the importance of highly reversible metal ion-ligand coordination chemistries for binders intended for high capacity alloying-based electrodes.
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Affiliation(s)
- Jaemin Kim
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Kiho Park
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Yunshik Cho
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Hyuksoo Shin
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Sungchan Kim
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
- Department of Materials Science and EngineeringSeoul National University1 Gwanak‐ro, Gwanak‐guSeoul08826Republic of Korea
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Abstract
Contrary to early motivation, the majority of aluminium ion batteries developed to date do not utilise multivalent ion storage; rather, these batteries rely on monovalent complex ions for their main redox reaction. This limitation is somewhat frustrating because the innate advantages of metallic aluminium such as its low cost and high air stability cannot be fully taken advantage of. Here, we report a tetradiketone macrocycle as an aluminium ion battery cathode material that reversibly reacts with divalent (AlCl2+) ions and consequently achieves a high specific capacity of 350 mAh g−1 along with a lifetime of 8000 cycles. The preferred storage of divalent ions over their competing monovalent counterparts can be explained by the relatively unstable discharge state when using monovalent AlCl2+ ions, which exert a moderate resonance effect to stabilise the structure. This study opens an avenue to realise truly multivalent aluminium ion batteries based on organic active materials, by tuning the relative stability of discharged states with carrier ions of different valence states. Aluminium ion batteries have been developed based on the storage of monovalent complex ions, impairing their original motivation of storing multivalent ions. Here, the authors demonstrate the divalent ion storage of tetradiketone macrocycles by tuning the relative stability of discharged states.
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Affiliation(s)
- Dong-Joo Yoo
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Gwanak-Gu, Seoul, Republic of Korea
| | - Martin Heeney
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, London, UK
| | - Florian Glöcklhofer
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, London, UK.
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Gwanak-Gu, Seoul, Republic of Korea. .,Department of Materials Science and Engineering, Seoul National University, Gwanak-Gu, Seoul, Republic of Korea.
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Lee HA, Shin M, Kim J, Choi JW, Lee H. Designing Adaptive Binders for Microenvironment Settings of Silicon Anode Particles. Adv Mater 2021; 33:e2007460. [PMID: 33629771 DOI: 10.1002/adma.202007460] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/01/2021] [Indexed: 06/12/2023]
Abstract
This study reports the concept of an "adaptive binder" to address the silicon anode challenge in Li-ion batteries. Binders exhibit adaptable capabilities upon gradual changes in the microenvironments surrounding silicon particles during anodic expansion-shrinkage cycles. Long, flexible binder chains are repositioned and reoriented upon the gradual formation of Si-micro-environments (Si-μ-env) during the early battery cycles. At this stage, the chemical interactions between the polymeric binders are reversible hydrogen bonds. As the Si-μ-env become stably set by repeated battery cycles, the chemical interactions exhibit reversible-to-irreversible transitions by the formation of covalent linkages between the binder polymers at the later stage of cycles. The binder polymer showing the aforementioned adaptive properties is hyaluronic acid, which has never been explored as a silicon-anode binder material, onto which the plant-inspired adhesive phenolic moiety, gallol (1,2,3-trihydroxybenzene), is conjugated (HA-GA) for stable adhesion to the surfaces of silicon particles. It is confirmed that the HA-GA binder can maintain a charge capacity that is approximately 3.3 times higher (1153 mAh g-1 ) than that of the nonconjugated HA binder (347 mAh g-1 ) after 600 cycles even at a rapid charge/discharge rate of 1 C (3500 mA g-1 ), indicating that adaptive properties are an important factor to consider in designing silicon-anode binders.
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Affiliation(s)
- Haesung A Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 University Rd., Daejeon, 34141, Republic of Korea
| | - Mikyung Shin
- Department of Intelligent Precision Healthcare Convergence, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Suwon, 16419, Republic of Korea
| | - Jaemin Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Seoul, 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University (SNU), 1 Gwanak-ro, Seoul, 08826, Republic of Korea
| | - Haeshin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 University Rd., Daejeon, 34141, Republic of Korea
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Kim JC, Kim YC, Choi JW. Use of hydrochlorothiazide and risk of nonmelanoma skin cancer in Koreans: a retrospective cohort study using administrative healthcare data. Clin Exp Dermatol 2021; 46:680-686. [PMID: 33215728 DOI: 10.1111/ced.14520] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 11/11/2020] [Accepted: 11/17/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND The incidence of skin cancer is increasing because of the ageing population and ultraviolet exposure, and previous studies have revealed that long-term use of hydrochlorothiazide (HCTZ), an antihypertensive agent, has been associated with an increased risk of nonmelanoma skin cancer (NMSC). However, the association of NMSC and HCTZ within East Asian populations is unclear. AIM To investigate the risk of NMSC in Korean subjects using HCTZ. METHODS A retrospective cohort study was conducted using the administrative healthcare data. The study enrolled 62 243 patients exposed to HCTZ with a cumulative dose of ≥ 2500 mg and 62 243 unexposed subjects matched 1 : 1 with the patients for age, sex and income level. RESULTS There was a significant difference in the cumulative incidence of NMSC between the two groups (log-rank P < 0.01). Cox regression analysis was conducted after adjusting for potential confounders, and showed the risk for NMSC in the group exposed to HCTZ was significantly higher than that of the unexposed group (hazard ratio = 1.48; 95% CI 1.03-2.13). In the subgroup analysis, the oldest age group (≥ 70 years) showed increased cumulative incidence of NMSC with statistical significance compared with the unexposed control group (log-rank P < 0.01). CONCLUSIONS In this study, we revealed that the cumulative use of HCTZ (≥ 2500 mg) could increase the risk of NMSC in Koreans, especially the older age group. Thus, HCTZ could be a risk factor for NMSC in East Asian as well as white populations.
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Affiliation(s)
- J C Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - Y C Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - J W Choi
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
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Lee HJ, Lee JH, Choi JW. Effect of Binding Affinity of Crystal Water on the Electrochemical Performance of Layered Double Hydroxides. ChemSusChem 2020; 13:6546-6551. [PMID: 33085225 DOI: 10.1002/cssc.202002306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/19/2020] [Indexed: 06/11/2023]
Abstract
The ever-increasing demand for safe batteries has driven research efforts to develop aqueous rechargeable batteries. In this regard, Ni-based layered double hydroxides (LDHs) have received marked attention owing to their adequate operating potential, high specific capacity, and decent cycling performance. Nevertheless, the effect of immobile intercalants (e. g., crystal water and anions) that are inherently present in the interlayer galleries is barely understood. In this paper, we report that the electrochemical performance of LDH largely depends on the extent to which the crystallinity is affected by the binding strength of crystal water to the transition metal slabs. A series of infrared spectroscopy and in-situ X-ray absorption analyses reveal that the lattice disordering in LDHs is beneficial for accommodating the stress during the (de)intercalation of carrier ions, which serves as the origin of their superior specific capacities and cycle life. This study presents a useful structure-property relationship of the way in which the binding affinity of crystal water affects the key electrochemical properties of the host electrode materials.
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Affiliation(s)
- Hyeon Jeong Lee
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
| | - Ji Hoon Lee
- School of Materials Science and Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566 (Republic of, Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 (Republic of, Korea
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36
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Baek M, Shin H, Char K, Choi JW. New High Donor Electrolyte for Lithium-Sulfur Batteries. Adv Mater 2020; 32:e2005022. [PMID: 33184954 DOI: 10.1002/adma.202005022] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/28/2020] [Indexed: 05/26/2023]
Abstract
The unparalleled theoretical specific energy of lithium-sulfur (Li-S) batteries has attracted considerable research interest from within the battery community. However, most of the long cycling results attained thus far relies on using a large amount of electrolyte in the cell, which adversely affects the specific energy of Li-S batteries. This shortcoming originates from the low solubility of polysulfides in the electrolyte. Here, 1,3-dimethyl-2-imidazolidinone (DMI) is reported as a new high donor electrolyte for Li-S batteries. The high solubility of polysulfides in DMI and its activation of a new reaction route, which engages the sulfur radical (S3 •- ), enables the efficient utilization of sulfur as reflected in the specific capacity of 1595 mAh g-1 under lean electrolyte conditions of 5 μLelectrolyte mgsulfur -1 . Moreover, the addition of LiNO3 stabilizes the lithium metal interface, thereby elevating the cycling performance to one of the highest known for high donor electrolytes in Li-S cells. These engineered high donor electrolytes are expected to advance Li-S batteries to cover a wide range of practical applications, particularly by incorporating established strategies to realize the reversibility of lithium metal electrodes.
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Affiliation(s)
- Minsung Baek
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Hyuksoo Shin
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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Kwon HY, Yoon HG, Lee C, Chen G, Liu K, Schmid AK, Wu YZ, Choi JW, Won C. Magnetic Hamiltonian parameter estimation using deep learning techniques. Sci Adv 2020; 6:6/39/eabb0872. [PMID: 32978161 PMCID: PMC7518863 DOI: 10.1126/sciadv.abb0872] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 08/10/2020] [Indexed: 05/16/2023]
Abstract
Understanding spin textures in magnetic systems is extremely important to the spintronics and it is vital to extrapolate the magnetic Hamiltonian parameters through the experimentally determined spin. It can provide a better complementary link between theories and experimental results. We demonstrate deep learning can quantify the magnetic Hamiltonian from magnetic domain images. To train the deep neural network, we generated domain configurations with Monte Carlo method. The errors from the estimations was analyzed with statistical methods and confirmed the network was successfully trained to relate the Hamiltonian parameters with magnetic structure characteristics. The network was applied to estimate experimentally observed domain images. The results are consistent with the reported results, which verifies the effectiveness of our methods. On the basis of our study, we anticipate that the deep learning techniques make a bridge to connect the experimental and theoretical approaches not only in magnetism but also throughout any scientific research.
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Affiliation(s)
- H Y Kwon
- Center for Spintronics, Korea Institute of Science and Technology, Seoul 02792, South Korea.
| | - H G Yoon
- Department of Physics, Kyung Hee University, Seoul 02447, South Korea
| | - C Lee
- Department of Physics, Kyung Hee University, Seoul 02447, South Korea
| | - G Chen
- Department of Physics, University of California, Davis, Davis, CA 95616, USA
| | - K Liu
- Department of Physics, University of California, Davis, Davis, CA 95616, USA
- Physics Department, Georgetown University, Washington, DC 20057, USA
| | - A K Schmid
- National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Y Z Wu
- Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - C Won
- Department of Physics, Kyung Hee University, Seoul 02447, South Korea.
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Yang M, Li Q, Chopdekar RV, Dhall R, Turner J, Carlström JD, Ophus C, Klewe C, Shafer P, N'Diaye AT, Choi JW, Chen G, Wu YZ, Hwang C, Wang F, Qiu ZQ. Creation of skyrmions in van der Waals ferromagnet Fe 3GeTe 2 on (Co/Pd) n superlattice. Sci Adv 2020; 6:6/36/eabb5157. [PMID: 32917619 PMCID: PMC7473669 DOI: 10.1126/sciadv.abb5157] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 07/15/2020] [Indexed: 05/27/2023]
Abstract
Magnetic skyrmions are topological spin textures, which usually exist in noncentrosymmetric materials where the crystal inversion symmetry breaking generates the so-called Dzyaloshinskii-Moriya interaction. This requirement unfortunately excludes many important magnetic material classes, including the recently found two-dimensional van der Waals (vdW) magnetic materials, which offer unprecedented opportunities for spintronic technology. Using photoemission electron microscopy and Lorentz transmission electron microscopy, we investigated and stabilized Néel-type magnetic skyrmion in vdW ferromagnetic Fe3GeTe2 on top of (Co/Pd) n in which the Fe3GeTe2 has a centrosymmetric crystal structure. We demonstrate that the magnetic coupling between the Fe3GeTe2 and the (Co/Pd) n could create skyrmions in Fe3GeTe2 without the need of an external magnetic field. Our results open exciting opportunities in spintronic research and the engineering of topologically protected nanoscale features by expanding the group of skyrmion host materials to include these previously unknown vdW magnets.
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Affiliation(s)
- M Yang
- Department of Physics, University of California, Berkeley, CA 94720, USA
| | - Q Li
- Department of Physics, University of California, Berkeley, CA 94720, USA.
| | - R V Chopdekar
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - R Dhall
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - J Turner
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - J D Carlström
- Department of Physics, University of California, Berkeley, CA 94720, USA
| | - C Ophus
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - C Klewe
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - P Shafer
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - A T N'Diaye
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - G Chen
- Department of Physics, University of California, Davis, CA 95616, USA
| | - Y Z Wu
- Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
| | - C Hwang
- Korea Research Institute of Standards and Science, Yuseong, Daejeon 305-340, Republic of Korea
| | - F Wang
- Department of Physics, University of California, Berkeley, CA 94720, USA
| | - Z Q Qiu
- Department of Physics, University of California, Berkeley, CA 94720, USA.
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Lee J, Lee K, Lee T, Kim H, Kim K, Cho W, Coskun A, Char K, Choi JW. In Situ Deprotection of Polymeric Binders for Solution-Processible Sulfide-Based All-Solid-State Batteries. Adv Mater 2020; 32:e2001702. [PMID: 32767479 DOI: 10.1002/adma.202001702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/13/2020] [Indexed: 06/11/2023]
Abstract
Sulfide-based all-solid-state batteries (ASSBs) have been featured as promising alternatives to the current lithium-ion batteries (LIBs) mainly owing to their superior safety. Nevertheless, a solution-based scalable manufacturing scheme has not yet been established because of the incompatible polarity of the binder, solvent, and sulfide electrolyte during slurry preparation. This dilemma is overcome by subjecting the acrylate (co)polymeric binders to protection-deprotection chemistry. Protection by the tert-butyl group allows for homogeneous dispersion of the binder in the slurry based on a relatively less polar solvent, with subsequent heat-treatment during the drying process to cleave the tert-butyl group. This exposes the polar carboxylic acid groups, which are then able to engage in hydrogen bonding with the active cathode material, high-nickel layered oxide. Deprotection strengthens the electrode adhesion such that the strength equals that of commercial LIB electrodes, and the key electrochemical performance parameters are improved markedly in both half-cell and full-cell settings. The present study highlights the potential of sulfide-based ASSBs for scalable manufacturing and also provides insights that protection-deprotection chemistry can generally be used for various battery cells that suffer from polarity incompatibility among multiple electrode components.
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Affiliation(s)
- Jieun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Kyulin Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Taegeun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Hyuntae Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Kyungsu Kim
- Advanced Batteries Research Center, Korea Electronics Technology Institute, 25 Saenari-ro, Bundang-gu, Seongnam, Gyeonggi, 13509, Republic of Korea
| | - Woosuk Cho
- Advanced Batteries Research Center, Korea Electronics Technology Institute, 25 Saenari-ro, Bundang-gu, Seongnam, Gyeonggi, 13509, Republic of Korea
| | - Ali Coskun
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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40
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Choi JW, Lee ES. Response to 'The incidence and survival of melanoma and nonmelanoma skin cancer in patients with vitiligo: a nationwide population-based matched cohort study in Korea'. Br J Dermatol 2020; 183:1149-1150. [PMID: 32762038 DOI: 10.1111/bjd.19464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/31/2020] [Indexed: 12/12/2022]
Affiliation(s)
- J W Choi
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - E-S Lee
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
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41
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Affiliation(s)
- Dong‐Joo Yoo
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Sungyun Yang
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Ki Jae Kim
- Department of Energy Engineering Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 05029 Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
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42
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Yoo D, Yang S, Kim KJ, Choi JW. Fluorinated Aromatic Diluent for High‐Performance Lithium Metal Batteries. Angew Chem Int Ed Engl 2020; 59:14869-14876. [DOI: 10.1002/anie.202003663] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/15/2020] [Indexed: 12/31/2022]
Affiliation(s)
- Dong‐Joo Yoo
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Sungyun Yang
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Ki Jae Kim
- Department of Energy Engineering Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 05029 Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
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43
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Eder S, Yoo DJ, Nogala W, Pletzer M, Santana Bonilla A, White AJP, Jelfs KE, Heeney M, Choi JW, Glöcklhofer F. Switching between Local and Global Aromaticity in a Conjugated Macrocycle for High-Performance Organic Sodium-Ion Battery Anodes. Angew Chem Int Ed Engl 2020; 59:12958-12964. [PMID: 32368821 PMCID: PMC7496320 DOI: 10.1002/anie.202003386] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/30/2020] [Indexed: 11/06/2022]
Abstract
Aromatic organic compounds can be used as electrode materials in rechargeable batteries and are expected to advance the development of both anode and cathode materials for sodium-ion batteries (SIBs). However, most aromatic organic compounds assessed as anode materials in SIBs to date exhibit significant degradation issues under fast-charge/discharge conditions and unsatisfying long-term cycling performance. Now, a molecular design concept is presented for improving the stability of organic compounds for battery electrodes. The molecular design of the investigated compound, [2.2.2.2]paracyclophane-1,9,17,25-tetraene (PCT), can stabilize the neutral state by local aromaticity and the doubly reduced state by global aromaticity, resulting in an anode material with extraordinarily stable cycling performance and outstanding performance under fast-charge/discharge conditions, demonstrating an exciting new path for the development of electrode materials for SIBs and other types of batteries.
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Affiliation(s)
- Simon Eder
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
| | - Dong-Joo Yoo
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Wojciech Nogala
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Matthias Pletzer
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
| | - Alejandro Santana Bonilla
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
| | - Andrew J P White
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
| | - Kim E Jelfs
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
| | - Martin Heeney
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Florian Glöcklhofer
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London, W12 0BZ, UK
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44
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Eder S, Yoo D, Nogala W, Pletzer M, Santana Bonilla A, White AJP, Jelfs KE, Heeney M, Choi JW, Glöcklhofer F. Switching between Local and Global Aromaticity in a Conjugated Macrocycle for High‐Performance Organic Sodium‐Ion Battery Anodes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003386] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Simon Eder
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Dong‐Joo Yoo
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Wojciech Nogala
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Matthias Pletzer
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Alejandro Santana Bonilla
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Andrew J. P. White
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Kim E. Jelfs
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Martin Heeney
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Florian Glöcklhofer
- Department of Chemistry and Centre for Processable Electronics Imperial College London Molecular Sciences Research Hub 80 Wood Lane London W12 0BZ UK
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45
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Yoo DJ, Choi JW. Elucidating the Extraordinary Rate and Cycling Performance of Phenanthrenequinone in Aluminum-Complex-Ion Batteries. J Phys Chem Lett 2020; 11:2384-2392. [PMID: 32126165 DOI: 10.1021/acs.jpclett.0c00324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Aluminum batteries are of great interest in "beyond-lithium" battery research because of their remarkably high performance in terms of rate capability and cycle life, in addition to the intrinsic advantages of aluminum metal such as its natural abundance and high theoretical capacity of 8056 mAh cm-3. The electrochemical performance that has been achieved thus far is unusual, as cells usually adopted viscous ionic liquid (IL) electrolytes with bulky complex carrier ions. Herein, we not only demonstrate the excellent rate and cycling performance of phenanthrenequinone (PQ) but also elucidate the origin of this extraordinary performance. Density functional theory (DFT) calculations and experimental analyses jointly revealed that the long-term cyclability of PQ arises from PQ-AlCl2 complexation, which lessens the effective charge of PQ to mitigate its dissolution into the electrolyte. Moreover, the formation of AlCl2+ without a separate desolvation step allows fast charge transfer, accelerating the AlCl2+ insertion process. This work unveils the importance of aluminum coordination chemistry in determining the key electrochemical properties of aluminum batteries and forms the basis of a new research direction for the development of battery systems based on complex ions.
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Affiliation(s)
- Dong-Joo Yoo
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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Jerng SE, Chang B, Shin H, Kim H, Lee T, Char K, Choi JW. Pyrazine-Linked 2D Covalent Organic Frameworks as Coating Material for High-Nickel Layered Oxide Cathodes in Lithium-Ion Batteries. ACS Appl Mater Interfaces 2020; 12:10597-10606. [PMID: 32031365 DOI: 10.1021/acsami.0c00643] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The high specific capacity in excess of 200 mAh g-1 and low dependence on cobalt have enhanced the research interest on nickel-rich layered metal oxides as cathode materials for lithium-ion batteries for electric vehicles. Nonetheless, their poor cycle life and thermal stability, resulting from the occurrence of cation mixing between the transition-metal (TM) and lithium ions, are yet to be fully addressed to enable the widespread and reliable use of these materials. Here, we report a two-dimensional (2D) pyrazine-linked covalent organic framework (namely, Pyr-2D) as a coating material for nickel-rich layered cathodes to mitigate unwanted TM dissolution and interfacial reactions. The Pyr-2D coating layer, especially the 2D planar morphology and conjugated atomic configuration of Pyr-2D, protects the electrode surface effectively during cycling without sacrificing the electric conductivity of the host material. As a result, Pyr-2D-coated nickel-rich layered cathodes exhibited superior cyclability, rate performance, and thermal stability. The present study highlights the potential ability of 2D conjugated covalent organic frameworks to improve the key electrochemical properties of emerging battery electrodes.
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Affiliation(s)
- Sung Eun Jerng
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Barsa Chang
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyuksoo Shin
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyuntae Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Taegeun Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
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47
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Abstract
Despite the prevalence of lithium ion batteries in modern technology, the search for alternative electrochemical systems to complement the global battery portfolio is an ongoing effort. The search has resulted in numerous candidates, among which mildly acidic aqueous zinc ion batteries have recently garnered significant academic interest, mostly due to their inherent safety. As the anode is often fixed as zinc metal in these systems, most studies address the absence of a suitable cathode for reaction with zinc ions. This has led to aggressive research into viable intercalation cathodes, some of which have shown impressive results. However, many investigations often overlook the implications of the zinc metal anode, when in fact the anode is key to determining the energy density of the entire cell. In this regard, we aim to shed light on the importance of the zinc metal anode. This perspective offers a brief discussion of zinc electrochemistry in mildly acidic aqueous environments, along with an overview of recent efforts to improve the performance of zinc metal to extract key lessons for future research initiatives. Furthermore, we discuss the energy density ramifications of the zinc anode with respect to its weight and reversibility through simple calculations for numerous influential reports in the field. Finally, we offer some perspectives on the importance of optimizing zinc anodes as well as a future direction for developing high-performance aqueous zinc ion batteries.
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Affiliation(s)
- Jaeho Shin
- School of Chemical and Biological Engineering and Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea .
| | - Jimin Lee
- School of Chemical and Biological Engineering and Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea .
| | - Youngbin Park
- School of Chemical and Biological Engineering and Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea .
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro, Gwanak-gu , Seoul 08826 , Republic of Korea .
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48
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Gao N, Je SG, Im MY, Choi JW, Yang M, Li Q, Wang TY, Lee S, Han HS, Lee KS, Chao W, Hwang C, Li J, Qiu ZQ. Creation and annihilation of topological meron pairs in in-plane magnetized films. Nat Commun 2019; 10:5603. [PMID: 31811144 PMCID: PMC6898613 DOI: 10.1038/s41467-019-13642-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 11/18/2019] [Indexed: 11/10/2022] Open
Abstract
Merons which are topologically equivalent to one-half of skyrmions can exist only in pairs or groups in two-dimensional (2D) ferromagnetic (FM) systems. The recent discovery of meron lattice in chiral magnet Co8Zn9Mn3 raises the immediate challenging question that whether a single meron pair, which is the most fundamental topological structure in any 2D meron systems, can be created and stabilized in a continuous FM film? Utilizing winding number conservation, we develop a new method to create and stabilize a single pair of merons in a continuous Py film by local vortex imprinting from a Co disk. By observing the created meron pair directly within a magnetic field, we determine its topological structure unambiguously and explore the topological effect in its creation and annihilation processes. Our work opens a pathway towards developing and controlling topological structures in general magnetic systems without the restriction of perpendicular anisotropy and Dzyaloshinskii–Moriya interaction. A meron is one half of a skyrmion but whether a single meron pair can be created and stabilized remains a challenging question. Here, Gao et al. develop a method to create and stabilize individual pairs of merons in a continuous Py film by local vortex imprinting from Co disks.
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Affiliation(s)
- N Gao
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics of Chinese Academy of Sciences, Beijing, 100029, China.,Department of Physics, University of California at Berkeley, Berkeley, CA, 94720, USA
| | - S -G Je
- Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - M -Y Im
- Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Department of Emerging Materials Science, DGIST, Daegu, Korea
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, Korea
| | - M Yang
- Department of Physics, University of California at Berkeley, Berkeley, CA, 94720, USA
| | - Q Li
- Department of Physics, University of California at Berkeley, Berkeley, CA, 94720, USA
| | - T Y Wang
- Department of Physics, University of California at Berkeley, Berkeley, CA, 94720, USA
| | - S Lee
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - H -S Han
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - K -S Lee
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - W Chao
- Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - C Hwang
- Korea Research Institute of Standards and Science, Yuseong, Daejeon, 305-340, Korea
| | - J Li
- International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, China.
| | - Z Q Qiu
- Department of Physics, University of California at Berkeley, Berkeley, CA, 94720, USA.
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49
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Cho Y, Kim J, Elabd A, Choi S, Park K, Kwon TW, Lee J, Char K, Coskun A, Choi JW. A Pyrene-Poly(acrylic acid)-Polyrotaxane Supramolecular Binder Network for High-Performance Silicon Negative Electrodes. Adv Mater 2019; 31:e1905048. [PMID: 31693231 DOI: 10.1002/adma.201905048] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/06/2019] [Indexed: 06/10/2023]
Abstract
Although being incorporated in commercial lithium-ion batteries for a while, the weight portion of silicon monoxide (SiOx , x ≈ 1) is only less than 10 wt% due to the insufficient cycle life. Along this line, polymeric binders that can assist in maintaining the mechanical integrity and interfacial stability of SiOx electrodes are desired to realize higher contents of SiOx . Herein, a pyrene-poly(acrylic acid) (PAA)-polyrotaxane (PR) supramolecular network is reported as a polymeric binder for SiOx with 100 wt%. The noncovalent functionalization of a carbon coating layer on the SiOx is achieved by using a hydroxylated pyrene derivative via the π-π stacking interaction, which simultaneously enables hydrogen bonding interactions with the PR-PAA network through its hydroxyl moiety. Moreover, the PR's ring sliding while being crosslinked to PAA endows a high elasticity to the entire polymer network, effectively buffering the volume expansion of SiOx and largely mitigating the electrode swelling. Based on these extraordinary physicochemical properties of the pyrene-PAA-PR supramolecular binder, the robust cycling of SiOx electrodes is demonstrated at commercial levels of areal loading in both half-cell and full-cell configurations.
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Affiliation(s)
- Yunshik Cho
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jaemin Kim
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Ahmed Elabd
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland
| | - Sunghun Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Kiho Park
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Tae-Woo Kwon
- Graduate School of Energy, Environment, Waterm, and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jungmin Lee
- Samsung SDI R&D Center, 130 Samsung-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16678, Republic of Korea
| | - Kookheon Char
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Ali Coskun
- Department of Chemistry, University of Fribourg, Chemin de Musee 9, Fribourg, 1700, Switzerland
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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Zhou T, Zhao Y, Choi JW, Coskun A. Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908513] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tianhong Zhou
- Department of ChemistryUniversity of Fribourg Chemin de Musee 9 Fribourg 1700 Switzerland
| | - Yan Zhao
- Department of ChemistryUniversity of Fribourg Chemin de Musee 9 Fribourg 1700 Switzerland
| | - Jang Wook Choi
- School of Chemical and Biological Engineering and Institute of Chemical ProcessesSeoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Republic of Korea
| | - Ali Coskun
- Department of ChemistryUniversity of Fribourg Chemin de Musee 9 Fribourg 1700 Switzerland
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