1
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Zuo F, Zhang H, Ding Y, Liu Y, Li Y, Liu H, Gu F, Li Q, Wang Y, Zhu Y, Li H, Yu G. Electrochemical interfacial catalysis in Co-based battery electrodes involving spin-polarized electron transfer. Proc Natl Acad Sci U S A 2023; 120:e2314362120. [PMID: 37983507 PMCID: PMC10691230 DOI: 10.1073/pnas.2314362120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/02/2023] [Indexed: 11/22/2023] Open
Abstract
Interfacial catalysis occurs ubiquitously in electrochemical systems, such as batteries, fuel cells, and photocatalytic devices. Frequently, in such a system, the electrode material evolves dynamically at different operating voltages, and this electrochemically driven transformation usually dictates the catalytic reactivity of the material and ultimately the electrochemical performance of the device. Despite the importance of the process, comprehension of the underlying structural and compositional evolutions of the electrode material with direct visualization and quantification is still a significant challenge. In this work, we demonstrate a protocol for studying the dynamic evolution of the electrode material under electrochemical processes by integrating microscopic and spectroscopic analyses, operando magnetometry techniques, and density functional theory calculations. The presented methodology provides a real-time picture of the chemical, physical, and electronic structures of the material and its link to the electrochemical performance. Using Co(OH)2 as a prototype battery electrode and by monitoring the Co metal center under different applied voltages, we show that before a well-known catalytic reaction proceeds, an interfacial storage process occurs at the metallic Co nanoparticles/LiOH interface due to injection of spin-polarized electrons. Subsequently, the metallic Co nanoparticles act as catalytic activation centers and promote LiOH decomposition by transferring these interfacially residing electrons. Most intriguingly, at the LiOH decomposition potential, electronic structure of the metallic Co nanoparticles involving spin-polarized electrons transfer has been shown to exhibit a dynamic variation. This work illustrates a viable approach to access key information inside interfacial catalytic processes and provides useful insights in controlling complex interfaces for wide-ranging electrochemical systems.
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Affiliation(s)
- Fengkai Zuo
- College of Physics, Qingdao University, Qingdao266071, China
| | - Hao Zhang
- College of Physics, Qingdao University, Qingdao266071, China
| | - Yu Ding
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX78712
- Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing210093, China
| | - Yongshuai Liu
- College of Physics, Qingdao University, Qingdao266071, China
| | - Yuhao Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Hengjun Liu
- College of Physics, Qingdao University, Qingdao266071, China
| | - Fangchao Gu
- College of Physics, Qingdao University, Qingdao266071, China
| | - Qiang Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Yaqun Wang
- College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao266590, China
| | - Yue Zhu
- Max Planck Institute for Solid State Research, Stuttgart70569, Germany
| | - Hongsen Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Guihua Yu
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX78712
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2
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Zhao Z, Ye W, Zhang F, Pan Y, Zhuo Z, Zou F, Xu X, Sang X, Song W, Zhao Y, Li H, Wang K, Lin C, Hu H, Li Q, Yang W, Li Q. Revealing the effect of LiOH on forming a SEI using a Co magnetic "probe". Chem Sci 2023; 14:12219-12230. [PMID: 37969610 PMCID: PMC10631223 DOI: 10.1039/d3sc04377k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/12/2023] [Indexed: 11/17/2023] Open
Abstract
The solid-electrolyte-interphase (SEI) plays a critical role in lithium-ion batteries (LIBs) because of its important influence on electrochemical performance, such as cycle stability, coulombic efficiency, etc. Although LiOH has been recognized as a key component of the SEI, its influence on the SEI and electrochemical performance has not been well clarified due to the difficulty in precisely controlling the LiOH content and characterize the detailed interface reactions. Here, a gradual change of LiOH content is realized by different reduction schemes among Co(OH)2, CoOOH and CoO. With reduced Co nanoparticles as magnetic "probes", SEI characterization is achieved by operando magnetometry. By combining comprehensive characterization and theoretical calculations, it is verified that LiOH leads to a composition transformation from lithium ethylene di-carbonate (LEDC) to lithium ethylene mono-carbonate (LEMC) in the SEI and ultimately results in capacity decay. This work unfolds the detailed SEI reaction scenario involving LiOH, provides new insights into the influence of SEI composition, and has value for the co-development between the electrode materials and electrolyte.
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Affiliation(s)
- Zhiqiang Zhao
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Wanneng Ye
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Fengling Zhang
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Yuanyuan Pan
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Zengqing Zhuo
- Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Feihu Zou
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Xixiang Xu
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Xiancheng Sang
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Weiqi Song
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Yue Zhao
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Hongsen Li
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Kuikui Wang
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Chunfu Lin
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Han Hu
- College of Chemical Engineering, China University of Petroleum (East China) Qingdao 266580 P. R. China
| | - Qinghao Li
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
| | - Wanli Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Qiang Li
- College of Physics, Weihai Innovation Research Institute, Institute of Materials for Energy and Environment, Qingdao University Qingdao 266071 P. R. China
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3
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Barik G, Pal S. Monolayer molybdenum diborides containing flat and buckled boride layers as anode materials for lithium-ion batteries. Phys Chem Chem Phys 2023. [PMID: 37366646 DOI: 10.1039/d3cp01189e] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
The materials community is interested in discovering new two-dimensional (2D) crystals because of the potential for fascinating features. In this work, by employing a systematic first-principles DFT analysis and MD simulations, we investigated the potential applications of monolayer Mo borides containing flat and buckled boride rings named P6/mmm and R3̄m MoB2 as anode materials of lithium-ion batteries. Our preliminary investigations show that the MoB2 monolayers possess significant structural, thermodynamic, mechanical, and dynamical stability. Due to their distinctive crystal structures, the Mo borides exhibit unique electronic properties, as expected. Additionally, we discovered that the highly negative Li adsorption energy achieved can aid in stabilizing the Li's adsorption on the surface of MoB2 rather than clustering, which ensured its suitability for LIB anode applications. The low computed Li-ion and Li-vacancy migration energy barrier provides robust charge/discharge performance even at a fully lithiated state, signifying their extraordinary possibility of being a suitable anode material for Li batteries. Both the monolayers can hold a maximum of two layers of Li ions on both sides to give a huge specific capacity of 912 mA h g-1, much higher than graphene and MoS2-based anodes. The computed in-plane stiffness constants demonstrate that the monolayer pristine and lithiated MoB2 satisfies Born's criteria, implying its mechanical flexibility. Additionally, its strong mechanical and thermal properties at the pristine and the lithiated state indicate that the 2D MoB2 can withstand massive volume expansion at a high temperature of 500 K during the lithiation/de-lithiation reaction and is remarkably beneficial for manufacturing flexible anodes. Based on the above findings, these two newly designed classes of monolayers of MoB2 are anticipated to open a new avenue for the upcoming generation of lithium-ion batteries.
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Affiliation(s)
- Gayatree Barik
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741 246, India.
- Department of Chemistry, Ashoka University, Sonepat, Haryana-131 029, India
| | - Sourav Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741 246, India.
- Department of Chemistry, Ashoka University, Sonepat, Haryana-131 029, India
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4
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Zhang J, Li T, Yuan Q, Wu Y, Dou Y, Han J. MgAl Saponite as a Transition-Metal-Free Anode Material for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54812-54821. [PMID: 36458834 DOI: 10.1021/acsami.2c17932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Transition-metal compounds (oxides, sulfides, hydroxides, etc.) as lithium-ion battery (LIB) anodes usually show extraordinary capacity larger than the theoretical value due to the transformation of LiOH into Li2O/LiH. However, there has rarely been a report relaying the transformation of LiOH into Li2O/LiH as the main reaction for LIBs, due to the strong alkalinity of LiOH leading to battery deterioration. In this work, layered silicate MgAl saponite (MA-SAP) is applied as a -OH donor to generate LiOH as the anode material of LIBs for the first time. The MA-SAP maintains a layered structure during the (dis)charging process and has zero-strain characteristic on the (001) crystal plane. In the discharging process, Mg, Al, and Si in the saponite sheets become electron-rich, while the active hydroxyl groups escape from the sheets and combine with lithium ions to form LiOH in the "caves" on sheets, and the LiOH continues to decompose into Li2O and LiH. Consequently, the MA-SAP delivers a maximum capacity of 536 mA h·g-1 at 200 mA·g-1 with a good high-current discharging ability of 155 mA h·g-1 after 1000 cycles under 1 A·g-1. Considering its extremely low cost and completely nontoxic characteristics, MA-SAP has great application prospects in energy storage. In addition, this work has an enlightening effect on the development of new anodes based on extraordinary mechanisms.
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Affiliation(s)
- Jian Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Tianlin Li
- Jiangsu Province High-Efficiency Energy Storage Technology and Equipment Engineering Laboratory, School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, P. R. China
| | - Qingyan Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Yunjia Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Yibo Dou
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Jingbin Han
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
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5
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Enhancing the lithium storage performance of α-Ni(OH)2 with Zn2+ doping. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Zhang C, Xiao J, Zhang X, Xu D, Gao H. 3D crumpled Ti3C2Tx-xerogel architectures for optimized lithium storage. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Kim H, Kim DI, Yoon WS. Enhancing Electrochemical Performance of Co(OH)2 Anode Materials by Introducing Graphene for Next-Generation Li-ion Batteries. J ELECTROCHEM SCI TE 2022. [DOI: 10.33961/jecst.2022.00122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
To satisfy the growing demand for high-performance batteries, diverse novel anode materials with high specific capacities have been developed to replace commercial graphite. Among them, cobalt hydroxides have received considerable attention as promising anode materials for lithium-ion batteries as they exhibit a high reversible capacity owing to the additional reaction of LiOH, followed by conversion reaction. In this study, we introduced graphene in the fabrication of Co(OH)2-based anode materials to further improve electrochemical performance. The resultant Co(OH)2/graphene composite exhibited a larger reversible capacity of ~1090 mAh g−1, compared with ~705 mAh g−1 for bare Co(OH)2. Synchrotron-based analyses were conducted to explore the beneficial effects of graphene on the composite material. The experimental results demonstrate that introducing graphene into Co(OH)2 facilitates both the conversion and reaction of the LiOH phase and provides additional lithium storage sites. In addition to insights into how the electrochemical performance of composite materials can be improved, this study also provides an effective strategy for designing composite materials.
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8
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Choi WI, Park I, An JS, Kim DY, Koh M, Jang I, Kim DS, Kang YS, Shim Y. Controlling Gas Generation of Li-Ion Battery through Divinyl Sulfone Electrolyte Additive. Int J Mol Sci 2022; 23:ijms23137328. [PMID: 35806333 PMCID: PMC9267101 DOI: 10.3390/ijms23137328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/26/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022] Open
Abstract
The focus of mainstream lithium-ion battery (LIB) research is on increasing the battery’s capacity and performance; however, more effort should be invested in LIB safety for widespread use. One aspect of major concern for LIB cells is the gas generation phenomenon. Following conventional battery engineering practices with electrolyte additives, we examined the potential usage of electrolyte additives to address this specific issue and found a feasible candidate in divinyl sulfone (DVSF). We manufactured four identical battery cells and employed an electrolyte mixture with four different DVSF concentrations (0%, 0.5%, 1.0%, and 2.0%). By measuring the generated gas volume from each battery cell, we demonstrated the potential of DVSF additives as an effective approach for reducing the gas generation in LIB cells. We found that a DVSF concentration of only 1% was necessary to reduce the gas generation by approximately 50% while simultaneously experiencing a negligible impact on the cycle life. To better understand this effect on a molecular level, we examined possible electrochemical reactions through ab initio molecular dynamics (AIMD) based on the density functional theory (DFT). From the electrolyte mixture’s exposure to either an electrochemically reductive or an oxidative environment, we determined the reaction pathways for the generation of CO2 gas and the mechanism by which DVSF additives effectively blocked the gas’s generation. The key reaction was merging DVSF with cyclic carbonates, such as FEC. Therefore, we concluded that DVSF additives could offer a relatively simplistic and effective approach for controlling the gas generation in lithium-ion batteries.
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Affiliation(s)
- Woon Ih Choi
- Innovation Center, Samsung Electronics, 1 Samsungjeonja-ro, Hwasung 18448, Korea; (W.I.C.); (J.S.A.); (I.J.); (D.S.K.)
| | - Insun Park
- Samsung Advanced Institute of Technology (SAIT), Samsung Electronics, 130 Samsung-ro, Suwon 16678, Korea; (I.P.); (D.Y.K.); (M.K.)
| | - Jae Sik An
- Innovation Center, Samsung Electronics, 1 Samsungjeonja-ro, Hwasung 18448, Korea; (W.I.C.); (J.S.A.); (I.J.); (D.S.K.)
| | - Dong Young Kim
- Samsung Advanced Institute of Technology (SAIT), Samsung Electronics, 130 Samsung-ro, Suwon 16678, Korea; (I.P.); (D.Y.K.); (M.K.)
| | - Meiten Koh
- Samsung Advanced Institute of Technology (SAIT), Samsung Electronics, 130 Samsung-ro, Suwon 16678, Korea; (I.P.); (D.Y.K.); (M.K.)
| | - Inkook Jang
- Innovation Center, Samsung Electronics, 1 Samsungjeonja-ro, Hwasung 18448, Korea; (W.I.C.); (J.S.A.); (I.J.); (D.S.K.)
| | - Dae Sin Kim
- Innovation Center, Samsung Electronics, 1 Samsungjeonja-ro, Hwasung 18448, Korea; (W.I.C.); (J.S.A.); (I.J.); (D.S.K.)
| | - Yoon-Sok Kang
- Samsung Advanced Institute of Technology (SAIT), Samsung Electronics, 130 Samsung-ro, Suwon 16678, Korea; (I.P.); (D.Y.K.); (M.K.)
- Correspondence: (Y.-S.K.); (Y.S.)
| | - Youngseon Shim
- Innovation Center, Samsung Electronics, 1 Samsungjeonja-ro, Hwasung 18448, Korea; (W.I.C.); (J.S.A.); (I.J.); (D.S.K.)
- Correspondence: (Y.-S.K.); (Y.S.)
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9
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Comanescu C. Recent Development in Nanoconfined Hydrides for Energy Storage. Int J Mol Sci 2022; 23:7111. [PMID: 35806115 PMCID: PMC9267122 DOI: 10.3390/ijms23137111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Hydrogen is the ultimate vector for a carbon-free, sustainable green-energy. While being the most promising candidate to serve this purpose, hydrogen inherits a series of characteristics making it particularly difficult to handle, store, transport and use in a safe manner. The researchers' attention has thus shifted to storing hydrogen in its more manageable forms: the light metal hydrides and related derivatives (ammonia-borane, tetrahydridoborates/borohydrides, tetrahydridoaluminates/alanates or reactive hydride composites). Even then, the thermodynamic and kinetic behavior faces either too high energy barriers or sluggish kinetics (or both), and an efficient tool to overcome these issues is through nanoconfinement. Nanoconfined energy storage materials are the current state-of-the-art approach regarding hydrogen storage field, and the current review aims to summarize the most recent progress in this intriguing field. The latest reviews concerning H2 production and storage are discussed, and the shift from bulk to nanomaterials is described in the context of physical and chemical aspects of nanoconfinement effects in the obtained nanocomposites. The types of hosts used for hydrogen materials are divided in classes of substances, the mean of hydride inclusion in said hosts and the classes of hydrogen storage materials are presented with their most recent trends and future prospects.
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Affiliation(s)
- Cezar Comanescu
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania;
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 1 Polizu St., 011061 Bucharest, Romania
- Faculty of Physics, University of Bucharest, Atomiștilor 405, 077125 Magurele, Romania
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10
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Choi YS, Choi W, Yoon WS, Kim JM. Unveiling the Genesis and Effectiveness of Negative Fading in Nanostructured Iron Oxide Anode Materials for Lithium-Ion Batteries. ACS NANO 2022; 16:631-642. [PMID: 35029370 DOI: 10.1021/acsnano.1c07943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Iron oxide anode materials for rechargeable lithium-ion batteries have garnered extensive attention because of their inexpensiveness, safety, and high theoretical capacity. Nanostructured iron oxide anodes often undergo negative fading, that is, unconventional capacity increase, which results in a capacity increasing upon cycling. However, the detailed mechanism of negative fading still remains unclear, and there is no consensus on the provenance. Herein, we comprehensively investigate the negative fading of iron oxide anodes with a highly ordered mesoporous structure by utilizing advanced synchrotron-based analysis. Electrochemical and structural analyses identified that the negative fading originates from an optimization of the electrolyte-derived surface layer, and the thus formed layer significantly contributes to the structural stability of the nanostructured electrode materials, as well as their cycle stability. This work provides an insight into understanding the origin of negative fading and its influence on nanostructured anode materials.
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Affiliation(s)
- Yun Seok Choi
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- Institute of Basic Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Woosung Choi
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Won-Sub Yoon
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Ji Man Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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11
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Ren L, Wang L, Qin Y, Li Q. High Cycle Stability of Hybridized Co(OH)2 Nanomaterial Structures Synthesized by the Water Bath Method as Anodes for Lithium-Ion Batteries. MICROMACHINES 2022; 13:mi13020149. [PMID: 35208274 PMCID: PMC8877691 DOI: 10.3390/mi13020149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 02/01/2023]
Abstract
Cobalt oxides have been intensely explored as anodes of lithium-ion batteries to resolve the intrinsic disadvantages of low electrical conductivity and volume change. However, as a precursor of preparing cobalt oxides, Co(OH)2 has rarely been investigated as the anode material of lithium-ion batteries, perhaps because of the complexity of hydroxides. Hybridized Co(OH)2 nanomaterial structures were synthesized by the water bath method and exhibited high electrochemical performance. The initial discharge and charge capacities were 1703.2 and 1262.9 mAh/g at 200 mA/g, respectively. The reversible capacity was 1050 mAh/g after 150 cycles. The reversible capability was 1015 mAh/g at 800 mA/g and increased to 1630 mAh/g when driven back to 100 mA/g. The electrochemical reaction kinetics study shows that the lithium-ion diffusion-controlled contribution is dominant in the energy storage mechanism. The superior electrochemical performance could result from the water bath method and the hybridization of nanosheets and nanoparticles structures. These hybridized Co(OH)2 nanomaterial structures with high electrochemical performance are promising anodes for lithium-ion batteries.
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Affiliation(s)
- Longlong Ren
- College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China;
| | - Linhui Wang
- College of Information Science and Engineering, Shandong Agricultural University, Taian 271018, China;
| | - Yufeng Qin
- College of Information Science and Engineering, Shandong Agricultural University, Taian 271018, China;
- Correspondence:
| | - Qiang Li
- College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China;
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12
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Gao Z, Li Z, Zhao C, Li T, Lu Y, Song YY. Construction of Bi-Component CoNi Nanosheet coated TiO2 Nanotube Arrays for Photocatalysis-Assisted Poisoning Tolerance toward Methanol Oxidation Reaction. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Kim H, Kim DI, Yoon WS. Challenges and Design Strategies for Conversion-Based Anode Materials for Lithium- and Sodium-Ion Batteries. J ELECTROCHEM SCI TE 2021. [DOI: 10.33961/jecst.2021.00920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Rong Y, Chen Y, Zheng J, Zhao Y, Li Q. Development of high performance alpha-Co(OH) 2/reduced graphene oxide microfilm for flexible in-sandwich and planar micro-supercapacitors. J Colloid Interface Sci 2021; 598:1-13. [PMID: 33887606 DOI: 10.1016/j.jcis.2021.04.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 12/11/2022]
Abstract
Herein, a series of alpha-Co(OH)2/reduced graphene oxide (rGO) microfilms and film-based nanodevices were developed via a new scalable technique. Due to the unique hexagonal nanoplates of ultrathin alpha-Co(OH)2 and the intrinsically conductive nature of rGO sheets, such thin films not only can improve the conductivity of alpha-Co(OH)2 and prevent the re-stacking of alpha-Co(OH)2 and rGO sheets but also short the transport routes of electrons and ions between the electrode and the electrolyte. The optimized alpha-Co(OH)2/rGO flexible electrode presents high specific capacitance (273.86 mF/cm2 at 0.1 mA/cm2), advanced rate capability, and excellent coulombic efficiency. Simultaneously, in-sandwich symmetric and asymmetric supercapacitors assembled with polyvinyl alcohol-KOH gel as the solid-state electrolyte achieved high areal and volumetric specific capacitances. Furthermore, a self-assembled planar alpha-Co(OH)2/rGO micro-supercapacitor (MSC) delivers high specific area capacitance (130F/cm2 at 0.5 mA/cm2) and excellent energy density (20 mWh/cm3@56 mW/cm3), which are superior to most of the recently reported carbon-based and metal hydroxides/oxides/sulfides-based planar MSCs. Also, our planar MSC shows excellent cycling performance, good flexibility, and mechanical stability. This work promotes the syntheses of other two-dimensional metal hydroxides/rGO composite film for high-performance flexible micro-electronics.
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Affiliation(s)
- Yangxin Rong
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, PR China
| | - Yuan Chen
- Institute for Energy Research, Key Laboratory of Zhenjiang, Jiangsu University, Zhenjiang 212013, PR China
| | - Jihua Zheng
- Institute for Energy Research, Key Laboratory of Zhenjiang, Jiangsu University, Zhenjiang 212013, PR China
| | - Yan Zhao
- Institute for Energy Research, Key Laboratory of Zhenjiang, Jiangsu University, Zhenjiang 212013, PR China.
| | - Qiuping Li
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, Zhejiang 315211, PR China.
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15
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Xu Y, Xie Z, Yu R, Chen M, Jiang D. Co(OH) 2 water oxidation cocatalyst-decorated CdS nanowires for enhanced photocatalytic CO 2 reduction performance. Dalton Trans 2021; 50:10159-10167. [PMID: 34231595 DOI: 10.1039/d1dt01082d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Photocatalytic CO2 reduction is a promising technology to resolve the greenhouse effect and energy crisis. In this work, a Co(OH)2 nanoparticle decorated CdS nanowire (Co(OH)2/CdS) based heterostructured photocatalyst was prepared via a solvothermal and subsequent co-precipitation method, and it was used for photocatalytic CO2 reduction. The optimal Co(OH)2/CdS photocatalyst achieves a CO production rate of 8.11 μmol g-1 h-1 under visible light irradiation (λ > 420 nm), which is about 2 times higher than that of bare CdS. The experimental results show that a Co(OH)2 cocatalyst possesses a great capability of consuming holes, which promotes the oxygen-producing half-reaction and accelerates charge separation, thus enhancing the CO2 photoreduction performance of CdS. Notably, without using complex synthesis processes, hazardous substances or expensive ingredients, Co(OH)2/CdS shows high light absorption, efficient charge separation and complete CO product selectivity. This work offers a new pathway for the construction of cost-effective photocatalytic materials to achieve highly efficient CO2 reduction activity by the integration of a Co(OH)2 cocatalyst.
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Affiliation(s)
- Yuyan Xu
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Zhongkai Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Rui Yu
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Min Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Deli Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
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16
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Martinez EY, Zhu K, Li CW. Reversible Electron Doping of Layered Metal Hydroxide Nanoplates (M = Co, Ni) Using n-Butyllithium. NANO LETTERS 2020; 20:7580-7587. [PMID: 32877192 DOI: 10.1021/acs.nanolett.0c03092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ambipolar doping of metal oxides is critical toward broadening the functionality of semiconducting oxides in electronic devices. Most metal oxides, however, show a strong preference for a single doping polarity due to the intrinsic stability of particular defects in an oxide lattice. In this work, we demonstrate that layered metal hydroxide nanomaterials of Co and Ni, which are intrinsically p-doped in their anhydrous rock salt form, can be n-doped using n-BuLi as a strong electron donor. A combination of X-ray characterization techniques reveal that hydroxide vacancy formation, Li+ adsorption, and varying degrees of electron delocalization are responsible for the stability of injected electrons. The doped electrons induce conductivity increases of 4-6 orders of magnitude relative to the undoped M(OH)2. We anticipate that chemical electron doping of layered metal hydroxides may be a general strategy to increase carrier concentration and stability for n-doping of intrinsically p-type metal oxides.
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Affiliation(s)
- Eve Y Martinez
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Kuixin Zhu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christina W Li
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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17
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Zhang K, Tamakloe W, Zhou L, Park M, Zhang J, Agyeman DA, Chou SL, Kang YM. Multifunctionalities of Graphene for Exploiting a Facile Conversion Reaction Route of Perovskite CoSnO 3 for Highly Reversible Na Ion Storage. J Phys Chem Lett 2020; 11:7988-7995. [PMID: 32867478 DOI: 10.1021/acs.jpclett.0c02093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Transition-metal oxides are promising anode materials for sodium ion batteries (SIBs) and have attracted a great deal of attention because of their natural abundance and high theoretical capacities. However, they suffer from low conductivity and large volumetric/structural variation during sodiation/desodiation processes, leading to unsatisfactory cycling stability and poor rate capability. This study proposes a novel conversion reaction using CoSnO3 (CSO) nanocubes uniformly wrapped in graphene nanosheets, which are fabricated using a wet-chemical strategy followed by low-temperature heat treatment. This optimized composite exhibits durable cyclability and high rate capability, which can be attributed to the strong interaction between reduced graphene oxide and CSO through its surface oxygen moieties. It develops a facile conversion reaction route, thereby leading to SnO2 formation during charging. This interactive phenomenon further contributes to improving the reaction kinetics and restraining the volume expansion during cycling. This study may provide a facile approach for addressing irreversible conversion of high-capacity oxide materials toward advanced SIBs.
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Affiliation(s)
- Kai Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wilson Tamakloe
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Limin Zhou
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Mihui Park
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Jing Zhang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Daniel Adjei Agyeman
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Shu-Lei Chou
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Yong-Mook Kang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
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18
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Gao X, Tang Z, Meng M, Yu Q, Li J, Shen S, Yang J. Graphene oxide induced assembly and crumpling of Co 3O 4 nanoplates. NANOTECHNOLOGY 2020; 31:305601. [PMID: 32217821 DOI: 10.1088/1361-6528/ab841f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cobalt (II, III) oxide (Co3O4) has been widely studied and applied in various fields, however, it suffers from slow mass and electron transfer during applications. Herein, crumpled Co3O4 and Co3O4/reduced graphene oxide (rGO) with tunable 2D-in-3D structures were prepared by combining spray pyrolysis with a graphene oxide (GO) template. The 2D Co3O4 nanoplates were interconnected with each other to form a 3D ball with many wrinkles, resulting in defect enrichment on the abundant boundaries of the nanosheets, which provided more active sites for catalytic reactions. In addition, the unique 2D-in-3D structure allowed fast mass transfer and structural stability. Furthermore, the assembled structure could be understood as being composed of uniformly distributed oxygen-containing functional groups pinning metal cations on the GO surface through electrostatic interaction, and the 2D structure of the GO enabled the in situ converted Co3O4 to grow along the GO surface with excellent dispersion. Taking advantage of the above, the Co3O4/rGO balls demonstrated an excellent oxygen evolution reaction performance, an overpotential of 298 mV at a current density of 10.0 mA cm-2 and a current density of 115.9 mA cm-2 at the overpotential of η = 500 mV.
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Affiliation(s)
- Xiaolin Gao
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
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19
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Jing YQ, Qu J, Zhai XZ, Chen Z, Liu HJ, Chang W, Yu ZZ. Achieving High Lithium Storage Capacity and Long-Term Cyclability of Novel Cobalt Germanate Hydroxide/Reduced Graphene Oxide Anodes with Regulated Electrochemical Catalytic Conversion Process of Hydroxyl Groups. ACS APPLIED MATERIALS & INTERFACES 2020; 12:14037-14048. [PMID: 32129062 DOI: 10.1021/acsami.0c01127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To develop ternary transition-metal germanate anodes with superior lithium storage performances for lithium-ion batteries, a novel capacity counterbalance approach in one compound is designed by introducing an electrocatalytic conversion-type component with a positive cycling trend to compensate the negative cycling trend of the GeO2 component. Novel cobalt germanate hydroxide (CGH) nanoplates chemically bonded on reduced graphene oxide (RGO) sheets are thus synthesized with a mild one-pot hydrothermal approach, constructing maximal face-to-face contact interfaces with interfacial bonds to boost the electrochemical conversion reactions. Furthermore, the hydroxyl groups (Co-OH) of CGH nanoplates are regulated by thermal annealing treatments, thus controlling the capacity contribution resulting from the electrocatalytic conversion reaction of LiOH to exactly offset the capacity fading of GeO2. The results on the CGH electrodes at different cycling potentials confirm the stepwise electrochemical reactions of Co, GeO2, and LiOH. The equilibrium of these electrochemical reactions ensures a stable cycling capacity without obvious fluctuations. Consequently, the optimal CGH/RGO hybrid anode delivers a reversible capacity as high as 1136 mA h g-1 at 0.1 A g-1 until 100 cycles. It also exhibits a long cyclability with a retained capacity of 560 mA h g-1 at 1 A g-1 until 1000 cycles. This work demonstrates a general and efficient capacity counterbalance method to highly boost lithium storage performances in terms of high capacity and long-term cyclability.
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Affiliation(s)
- Ya-Qiong Jing
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jin Qu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xian-Zhi Zhai
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhe Chen
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Hong-Jun Liu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wei Chang
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhong-Zhen Yu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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20
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Kim H, Choi W, Yoon J, Um JH, Lee W, Kim J, Cabana J, Yoon WS. Exploring Anomalous Charge Storage in Anode Materials for Next-Generation Li Rechargeable Batteries. Chem Rev 2020; 120:6934-6976. [DOI: 10.1021/acs.chemrev.9b00618] [Citation(s) in RCA: 233] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hyunwoo Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Woosung Choi
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Jaesang Yoon
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Ji Hyun Um
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Wontae Lee
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Jaeyoung Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Jordi Cabana
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Won-Sub Yoon
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
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21
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Wu H, Zhang X, Zhang H, Zhu W, Li S. Design binder-free Ni0.66Co0.34-LDH heterostructures as electrode material for supercapacitor application. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Jing YQ, Qu J, Chang W, Ji QY, Liu HJ, Zhang TT, Yu ZZ. Cobalt Hydroxide Carbonate/Reduced Graphene Oxide Anodes Enabled by a Confined Step-by-Step Electrochemical Catalytic Conversion Process for High Lithium Storage Capacity and Excellent Cyclability with a Low Variance Coefficient. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33091-33101. [PMID: 31414794 DOI: 10.1021/acsami.9b12088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Transition metal carbonates/hydroxides have attracted much attention as appealing anode materials due to their considerable reversible electrochemical catalytic conversion capacity. However, their serious positive or negative trends with cycles caused by the electrochemical catalytic conversion seriously affect their practical applications. Herein, novel one-dimensional cobalt hydroxide carbonate (CHC) nanomaterials are tightly anchored on reduced graphene oxide (RGO) sheets via a facile one-pot hydrothermal synthesis, forming surface-confined domains to further restrict the electrochemical catalytic conversion process. The analysis on the cycled electrodes at varied potentials confirms that the added capacity of CHC arises from the step-by-step reversible reactions of Li2CO3 and LiOH under the electrochemical catalysis of Co metal generated by the conversion reaction of CHC. The reversible reaction of Li2CO3 is followed closely by that of LiOH in the discharge process, while the order is opposite in the charge process. Such a step-by-step electrochemical catalytic conversion process could confine each other to accommodate the volume change and avoid side reactions. The confined effect is further enhanced by limiting the width and length of the CHC, which are determined by regulating the nucleation and growth of CHC on the surface of RGO, leading to an extraordinary cyclability. The optimized CHC/RGO hybrid maintains a high reversible capacity of 1110 mA h g-1 after 100 cycles at 0.1 A g-1, which is much higher than the theoretical value of CHC (506 mA h g-1) on the basis of the recognized conversion reaction. Furthermore, it keeps high reversible capacities of 755 and 506 mA h g-1 after 200 cycles at 1 and 2 A g-1, respectively, exhibiting a high-rate cyclability with the lowest coefficient of variance of 9.4% among the reported ones. The confined step-by-step electrochemical catalytic conversion process facilitates high lithium storage capacity and satisfactory cyclability with a pretty low variance coefficient.
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23
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Du P, Wen Y, Chiang FK, Yao A, Wang JQ, Kang J, Chen L, Xie G, Liu X, Qiu HJ. Corrosion Engineering To Synthesize Ultrasmall and Monodisperse Alloy Nanoparticles Stabilized in Ultrathin Cobalt (Oxy)hydroxide for Enhanced Electrocatalysis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14745-14752. [PMID: 30932466 DOI: 10.1021/acsami.8b22268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two-dimensional (2D) nanomaterials decorated with ultrasmall and well-alloyed bimetallic nanoparticles (NPs) have many important applications. Developing a facile and scalable 2D material/hybrid synthesis strategy is still a big challenge. Herein, a top-down corrosion strategy is developed to prepare ultrathin cobalt (oxy)hydroxide nanosheets decorated with ultrasmall (∼1.6 nm) alloy NPs. The formation of ultrathin (oxy)hydroxide nanosheets has a restrain effect to prevent the growth of small NPs into bigger ones. Thanks to the ultrathin 2D nature and strong electronic interaction between Co(OH)2 and alloy NPs, the Pt-based binary alloy NPs are greatly stabilized by the Co(OH)2 nanosheets and the hybrids exhibit much enhanced electrocatalytic performance for water splitting. Especially, the mass activities of the PtPd- and PtCu-decorated samples for hydrogen evolution are ∼8 times that of Pt/C. When used as both cathode and anode electrocatalysts to split water, the hybrid nanosheets outperform the commercial Pt/C-RuO2 combination. At 10 mA cm-2, the needed potential is only 1.53 V. This work provides us a highly controllable and scalable means to produce clean 2D nanomaterials decorated with a series of alloy NPs such as PtPd, PtCu, AuNi, and so forth.
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Affiliation(s)
- Peng Du
- School of Materials Science and Engineering , Harbin Institute of Technology (Shenzhen) , Shenzhen 518055 , China
| | - Yuren Wen
- School of Materials Science and Engineering , University of Science and Technology Beijing , Beijing 100083 , China
| | - Fu-Kuo Chiang
- National Institute of Clean and Low Carbon Energy , Beijing 102209 , China
| | - Ayan Yao
- Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , China
| | - Jun-Qiang Wang
- Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , China
| | - Jianli Kang
- State Key Laboratory of Separation Membrane and Membrane Processes and School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , China
| | - Luyang Chen
- School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Guoqiang Xie
- School of Materials Science and Engineering , Harbin Institute of Technology (Shenzhen) , Shenzhen 518055 , China
| | - Xingjun Liu
- School of Materials Science and Engineering , Harbin Institute of Technology (Shenzhen) , Shenzhen 518055 , China
- State Key Laboratory of Advanced Welding and Joining , Harbin Institute of Technology , Shenzhen 518055 , China
| | - Hua-Jun Qiu
- School of Materials Science and Engineering , Harbin Institute of Technology (Shenzhen) , Shenzhen 518055 , China
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24
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Lee HH, Lee JB, Park Y, Park KH, Okyay MS, Shin DS, Kim S, Park J, Park N, An BK, Jung YS, Lee HW, Lee KT, Hong SY. Coordination Polymers for High-Capacity Li-Ion Batteries: Metal-Dependent Solid-State Reversibility. ACS APPLIED MATERIALS & INTERFACES 2018; 10:22110-22118. [PMID: 29901390 DOI: 10.1021/acsami.8b04678] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Electrode materials exploiting multielectron-transfer processes are essential components for large-scale energy storage systems. Organic-based electrode materials undergoing distinct molecular redox transformations can intrinsically circumvent the structural instability issue of conventional inorganic-based host materials associated with lattice volume expansion and pulverization. Yet, the fundamental mechanistic understanding of metal-organic coordination polymers toward the reversible electrochemical processes is still lacking. Herein, we demonstrate that metal-dependent spatial proximity and binding affinity play a critical role in the reversible redox processes, as verified by combined 13C solid-state NMR, X-ray absorption spectroscopy, and transmission electron microscopy. During the electrochemical lithiation, in situ generated metallic nanoparticles dispersed in the organic matrix generate electrically conductive paths, synergistically aiding subsequent multielectron transfer to π-conjugated ligands. Comprehensive screening on 3d-metal-organic coordination polymers leads to a high-capacity electrode material, cobalt-2,5-thiophenedicarboxylate, which delivers a stable specific capacity of ∼1100 mA h g-1 after 100 cycles.
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Affiliation(s)
| | | | - Yuwon Park
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 599 Gwanangno , Gwanak-gu, Seoul 151-744 , Republic of Korea
| | - Kern Ho Park
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 599 Gwanangno , Gwanak-gu, Seoul 151-744 , Republic of Korea
| | | | | | | | | | | | - Byeong-Kwan An
- Department of Chemistry , The Catholic University of Korea , Bucheon-si , Geyonggi-do 420-753 , Republic of Korea
| | | | | | - Kyu Tae Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 599 Gwanangno , Gwanak-gu, Seoul 151-744 , Republic of Korea
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