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Song J, Shin DO, Byun S, Roh Y, Bak C, Song J, Choi J, Lee H, Kwon TS, Lee YG, Ryou MH, Lee YM. A New Perspective on the Advanced Microblade Cutting Method for Reliable Adhesion Measurement of Composite Electrodes. J ELECTROCHEM SCI TE 2021. [DOI: 10.33961/jecst.2021.00976] [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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So Y, Bae HS, Kang YY, Chung JY, Park NK, Kim J, Jung HT, Won JC, Ryou MH, Kim YH. Eco-Friendly Water-Processable Polyimide Binders with High Adhesion to Silicon Anodes for Lithium-Ion Batteries. Nanomaterials (Basel) 2021; 11:nano11123164. [PMID: 34947515 PMCID: PMC8705944 DOI: 10.3390/nano11123164] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/17/2021] [Accepted: 11/19/2021] [Indexed: 11/16/2022]
Abstract
Silicon is an attractive anode material for lithium-ion batteries (LIBs) because of its natural abundance and excellent theoretical energy density. However, Si-based electrodes are difficult to commercialize because of their significant volume changes during lithiation that can result in mechanical damage. To overcome this limitation, we synthesized an eco-friendly water-soluble polyimide (W-PI) precursor, poly(amic acid) salt (W-PAmAS), as a binder for Si anodes via a simple one-step process using water as a solvent. Using the W-PAmAS binder, a composite Si electrode was achieved by low-temperature processing at 150 °C. The adhesion between the electrode components was further enhanced by introducing 3,5-diaminobenzoic acid, which contains free carboxylic acid (-COOH) groups in the W-PAmAS backbone. The -COOH of the W-PI binder chemically interacts with the surface of Si nanoparticles (SiNPs) by forming ester bonds, which efficiently bond the SiNPs, even during severe volume changes. The Si anode with W-PI binder showed improved electrochemical performance with a high capacity of 2061 mAh g-1 and excellent cyclability of 1883 mAh g-1 after 200 cycles at 1200 mA g-1. Therefore, W-PI can be used as a highly effective polymeric binder in Si-based high-capacity LIBs.
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Affiliation(s)
- Yujin So
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea;
| | - Hyeon-Su Bae
- Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea;
| | - Yi Young Kang
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
| | - Ji Yun Chung
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, Daejeon 34113, Korea
| | - No Kyun Park
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
| | - Jinsoo Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
| | - Hee-Tae Jung
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea;
| | - Jong Chan Won
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, Daejeon 34113, Korea
- Correspondence: (J.C.W.); (M.-H.R.); (Y.H.K.); Tel.: +82-860-7294 (J.C.W.); +82-42-821-1534 (M.-H.R.); +82-42-860-7274 (Y.H.K.)
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea;
- Correspondence: (J.C.W.); (M.-H.R.); (Y.H.K.); Tel.: +82-860-7294 (J.C.W.); +82-42-821-1534 (M.-H.R.); +82-42-860-7274 (Y.H.K.)
| | - Yun Ho Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea; (Y.S.); (Y.Y.K.); (J.Y.C.); (N.K.P.); (J.K.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, Daejeon 34113, Korea
- Correspondence: (J.C.W.); (M.-H.R.); (Y.H.K.); Tel.: +82-860-7294 (J.C.W.); +82-42-821-1534 (M.-H.R.); +82-42-860-7274 (Y.H.K.)
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Phiri I, Kim J, Oh DH, Ravi M, Bae HS, Hong J, Kim S, Jeong YC, Lee YM, Lee YG, Ryou MH. Synergistic Effect of a Dual-Salt Liquid Electrolyte with a LiNO 3 Functional Additive toward Stabilizing Thin-Film Li Metal Electrodes for Li Secondary Batteries. ACS Appl Mater Interfaces 2021; 13:31605-31613. [PMID: 34192462 DOI: 10.1021/acsami.1c04972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Li metal thickness has been considered a key factor in determining the electrochemical performance of Li metal anodes. The use of thin Li metal anodes is a prerequisite for increasing the energy density of Li secondary batteries intended for emerging large-scale electrical applications, such as electric vehicles and energy storage systems. To utilize thin (20 μm thick) Li metal anodes in Li metal secondary batteries, we investigated the synergistic effect of a functional additive (Li nitrate, LiNO3) and a dual-salt electrolyte (DSE) system composed of Li bis(fluorosulfonyl)imide (LiTFSI) and Li bis(oxalate)borate (LiBOB). By controlling the amount of LiNO3 in DSE, we found that DSE containing 0.05 M LiNO3 (DSE-0.05 M LiNO3) significantly improved the electrochemical performance of Li metal anodes. DSE-0.05 M LiNO3 increased the cycling performance by 146.3% [under the conditions of a 1C rate (2.0 mA cm-2), DSE alone maintained 80% of the initial discharge capacity up to the 205th cycle, whereas DSE-0.05 M LiNO3 maintained 80% up to the 300th cycle] and increased the rate capability by 128.2% compared with DSE alone [the rate capability of DSE-0.05 M LiNO3 = 50.4 mAh g-1, and DSE = 39.3 mAh g-1 under 7C rate conditions (14.0 mA cm-2)]. After analyzing the Li metal surface using scanning electron microscopy and X-ray photoelectron spectroscopy, we were able to infer that the stabilized solid electrolyte interphase layer formed by the combination of LiNO3 and the dual salt resulted in a uniform Li deposition during repeated Li plating/stripping processes.
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Affiliation(s)
- Isheunesu Phiri
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Jungmin Kim
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Dong-Hoon Oh
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Muchakayala Ravi
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Hyeon-Su Bae
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Jinseok Hong
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Sojin Kim
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Yong-Cheol Jeong
- Micro/Nano Scale Manufacturing R&D Department, KITECH, Ansan 426-910, Republic of Korea
| | - Yong Min Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu 42988, Republic of Korea
| | - Young-Gi Lee
- Intelligent Sensors Research Section, Electronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
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Ravi M, Kim S, Ran F, Kim DS, Lee YM, Ryou MH. Hybrid gel polymer electrolyte based on 1-methyl-1-Propylpyrrolidinium Bis(Trifluoromethanesulfonyl) imide for flexible and shape-variant lithium secondary batteries. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.119018] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Jin D, Bae HS, Hong J, Kim S, Oh J, Kim K, Jo T, Lee YM, Lee YG, Ryou MH. Scaffold-structured polymer binders for long-term cycle performance of stabilized lithium-powder electrodes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Park J, Kim J, Jung DS, Phiri I, Bae HS, Hong J, Kim S, Lee YG, Ryou MH, Lee K. Microalgae-Templated Spray Drying for Hierarchical and Porous Fe 3O 4/C Composite Microspheres as Li-ion Battery Anode Materials. Nanomaterials (Basel) 2020; 10:nano10102074. [PMID: 33092192 PMCID: PMC7589054 DOI: 10.3390/nano10102074] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 02/03/2023]
Abstract
A method of microalgae-templated spray drying to develop hierarchical porous Fe3O4/C composite microspheres as anode materials for Li-ion batteries was developed. During the spray-drying process, individual microalgae serve as building blocks of raspberry-like hollow microspheres via self-assembly. In the present study, microalgae-derived carbon matrices, naturally doped heteroatoms, and hierarchical porous structural features synergistically contributed to the high electrochemical performance of the Fe3O4/C composite microspheres, enabling a discharge capacity of 1375 mA·h·g-1 after 700 cycles at a current density of 1 A/g. Notably, the microalgal frameworks of the Fe3O4/C composite microspheres were maintained over the course of charge/discharge cycling, thus demonstrating the structural stability of the composite microspheres against pulverization. In contrast, the sample fabricated without microalgal templating showed significant capacity drops (up to ~40% of initial capacity) during the early cycles. Clearly, templating of microalgae endows anode materials with superior cycling stability.
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Affiliation(s)
- Jinseok Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea;
| | - Jungmin Kim
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.K.); (I.P.); (H.-S.B.); (J.H.); (S.K.)
| | - Dae Soo Jung
- Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Korea;
| | - Isheunesu Phiri
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.K.); (I.P.); (H.-S.B.); (J.H.); (S.K.)
| | - Hyeon-Su Bae
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.K.); (I.P.); (H.-S.B.); (J.H.); (S.K.)
| | - Jinseok Hong
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.K.); (I.P.); (H.-S.B.); (J.H.); (S.K.)
| | - Sojin Kim
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.K.); (I.P.); (H.-S.B.); (J.H.); (S.K.)
| | - Young-Gi Lee
- Intelligent Sensors Research Section, Electronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Korea
- Correspondence: (Y.-G.L.); (M.-H.R.); (K.L.); Tel.: +82-42-860-6822 (Y.-G.L.); +82-42-821-1534 (M.-H.R.); +82-42-821-8610 (K.L.)
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.K.); (I.P.); (H.-S.B.); (J.H.); (S.K.)
- Correspondence: (Y.-G.L.); (M.-H.R.); (K.L.); Tel.: +82-42-860-6822 (Y.-G.L.); +82-42-821-1534 (M.-H.R.); +82-42-821-8610 (K.L.)
| | - Kyubock Lee
- Graduate School of Energy Science and Technology, Chungnam National University, Daejeon 34134, Korea
- Correspondence: (Y.-G.L.); (M.-H.R.); (K.L.); Tel.: +82-42-860-6822 (Y.-G.L.); +82-42-821-1534 (M.-H.R.); +82-42-821-8610 (K.L.)
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Choi J, Yang K, Bae HS, Phiri I, Ahn HJ, Won JC, Lee YM, Kim YH, Ryou MH. Highly Stable Porous Polyimide Sponge as a Separator for Lithium-metal Secondary Batteries. Nanomaterials (Basel) 2020; 10:nano10101976. [PMID: 33036223 PMCID: PMC7600698 DOI: 10.3390/nano10101976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/26/2020] [Accepted: 09/30/2020] [Indexed: 11/16/2022]
Abstract
To inhibit Li-dendrite growth on lithium (Li)-metal electrodes, which causes capacity deterioration and safety issues in Li-ion batteries, we prepared a porous polyimide (PI) sponge using a solution-processable high internal-phase emulsion technique with a water-soluble PI precursor solution; the process is not only simple but also environmentally friendly. The prepared PI sponge was processed into porous PI separators and used for Li-metal electrodes. The physical properties (e.g., thermal stability, liquid electrolyte uptake, and ionic conductivity) of the porous PI separators and their effect on the Li-metal anodes (e.g., self-discharge and open-circuit voltage properties after storage, cycle performance, rate capability, and morphological changes) were investigated. Owing to the thermally stable properties of the PI polymer, the porous PI separators demonstrated no dimensional changes up to 180 °C. In comparison with commercialized polyethylene (PE) separators, the porous PI separators exhibited improved wetting ability for liquid electrolytes; thus, the latter improved not only the physical properties (e.g., improved the electrolyte uptake and ionic conductivity) but also the electrochemical properties of Li-metal electrodes (e.g., maintained stable self-discharge capacity and open-circuit voltage features after storage and improved the cycle performance and rate capability) in comparison with PE separators.
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Affiliation(s)
- Junyoung Choi
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.C.); (H.-S.B.); (I.P.)
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea; (K.Y.); (H.J.A.); (J.C.W.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, 217 Gajeongro, Yuseong-gu, Daejeon 34113, Korea
| | - Kwansoo Yang
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea; (K.Y.); (H.J.A.); (J.C.W.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, 217 Gajeongro, Yuseong-gu, Daejeon 34113, Korea
| | - Hyeon-Su Bae
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.C.); (H.-S.B.); (I.P.)
| | - Isheunesu Phiri
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.C.); (H.-S.B.); (I.P.)
| | - Hyun Jeong Ahn
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea; (K.Y.); (H.J.A.); (J.C.W.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, 217 Gajeongro, Yuseong-gu, Daejeon 34113, Korea
| | - Jong Chan Won
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea; (K.Y.); (H.J.A.); (J.C.W.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, 217 Gajeongro, Yuseong-gu, Daejeon 34113, Korea
| | - Yong Min Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-Daero, Daegu 42988, Korea
- Correspondence: (Y.M.L.); (Y.H.K.); (M.-H.R.); Tel.: +82-42-785-6425 (Y.M.L); +82-42-860-7274 (Y.H.K.); +82-42-821-1534 (M.-H.R.)
| | - Yun Ho Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeongro, Yuseong-gu, Daejeon 34114, Korea; (K.Y.); (H.J.A.); (J.C.W.)
- Korea Research Institute of Chemical Technology (KRICT) School, University of Science and Technology, 217 Gajeongro, Yuseong-gu, Daejeon 34113, Korea
- Correspondence: (Y.M.L.); (Y.H.K.); (M.-H.R.); Tel.: +82-42-785-6425 (Y.M.L); +82-42-860-7274 (Y.H.K.); +82-42-821-1534 (M.-H.R.)
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea; (J.C.); (H.-S.B.); (I.P.)
- Correspondence: (Y.M.L.); (Y.H.K.); (M.-H.R.); Tel.: +82-42-785-6425 (Y.M.L); +82-42-860-7274 (Y.H.K.); +82-42-821-1534 (M.-H.R.)
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Byun S, Choi J, Roh Y, Song D, Ryou MH, Lee YM. Mechanical robustness of composite electrode for lithium ion battery: Insight into entanglement & crystallinity of polymeric binder. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135471] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Choi J, Jin D, Lee YM, Ryou MH. Surface Reinforcing Balloon Trick-Inspired Separator/Li Metal Integrated Assembly To Improve the Electrochemical Performance of Li Metal Batteries. ACS Appl Mater Interfaces 2019; 11:43122-43129. [PMID: 31609112 DOI: 10.1021/acsami.9b13424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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
Li metal experiences significant morphological changes during operation, resulting in rapid electrochemical performance degradation. In this study, a traditional balloon trick is applied to the Li metal surface to release mechanical stress and hinder morphological changes during operation. Polymer separators directly attach to the Li metal surface using a polymeric adhesive to fabricate a separator/Li metal integrated assembly. The separator/Li metal assembly improves not only the electrochemical performance but also safety issues related to Li metal anodes. This approach has three main advantages: (i) Li metal surface stabilization. The separator/Li metal assembly mechanically stabilize the Li metal surface, resulting in improved rate capability and cycle performance [85.0% of initial discharge capacity (90.2 mAh g-1) at a 7C condition for rate capability and 87.6% of discharge capacity (95.5 mAh g-1) at the 220th cycle] compared with the bare Li metal without separator integration [82.6% of initial discharge capacity (84.5 mAh g-1) at a 3C condition for rate capability and 58.0% of discharge capacity (62.6 mAh g-1) at the 120th cycle]. (ii) Suitability for high energy density battery implementation. The thickness of the polymeric adhesive is less than 1 μm, which is one-tenth of the coating layer of conventional thermally stable separators, but exhibits similar thermal shrinkage characteristics (0% shrinkage at 140 °C for 30 min). By reducing the thickness of inactive components, a larger volume of active material can be loaded into the battery system to increase the energy density of the battery. (iii) Simple process for mass production. The separator/Li metal integration process ("stick" and "dry") is very simple and can be easily applicable across industries.
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Affiliation(s)
- Junyoung Choi
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero, Yuseong-gu , Daejeon 34158 , Republic of Korea
| | - Dahee Jin
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero, Yuseong-gu , Daejeon 34158 , Republic of Korea
- Department of Energy Systems Engineering , Daegu Gyeongbuk Institute of Science and Technology (DGIST) , 333 Techno Jungang-Daero , Daegu 42988 , Republic of Korea
| | - Yong Min Lee
- Department of Energy Systems Engineering , Daegu Gyeongbuk Institute of Science and Technology (DGIST) , 333 Techno Jungang-Daero , Daegu 42988 , Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero, Yuseong-gu , Daejeon 34158 , Republic of Korea
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Yoon B, Park J, Lee J, Kim S, Ren X, Lee YM, Kim HT, Lee H, Ryou MH. High-Rate Cycling of Lithium-Metal Batteries Enabled by Dual-Salt Electrolyte-Assisted Micropatterned Interfaces. ACS Appl Mater Interfaces 2019; 11:31777-31785. [PMID: 31403273 DOI: 10.1021/acsami.9b05492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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
We present a synergistic strategy to boost the cycling performance of Li-metal batteries. The strategy is based on the combined use of a micropattern (MP) on the surface of the Li-metal electrode and an advanced dual-salt electrolyte (DSE) system to more efficiently control undesired Li-metal deposition at higher current density (∼3 mA cm-2). The MP-Li electrode induces a spatially uniform current distribution to achieve dendrite-free Li-metal deposition beneath the surface layer formed by the DSE. The MP-Li/DSE combination exhibited excellent synergistic rate capability improvements that were neither observed with the MP-Li system nor for the bare Li/DSE system. The combination also resulted in the Li||LiMn2O4 battery attaining over 1 000 cycles, which is twice as long at the same capacity retention (80%) compared with the control cells (MP-Li without DSE). We further demonstrated extremely fast charging at a rate of 15 C (19.5 mA cm-2).
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Affiliation(s)
- Byeolhee Yoon
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Jinkyu Park
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Jinhong Lee
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon , 34141 , South Korea
| | - Seokwoo Kim
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Xiaodi Ren
- Energy and Environment Directorate , Pacific Northwest National Laboratory (PNNL) , 902 Battelle Boulevard , Richland , Washington 99354 , United States
| | - Yong Min Lee
- Department of Energy Systems Engineering , Daegu Gyeongbuk Institute of Science and Technology (DGIST) , 333 Techno Jungang-Daero , Daegu 42988 , Republic of Korea
| | - Hee-Tak Kim
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon , 34141 , South Korea
| | - Hongkyung Lee
- Energy and Environment Directorate , Pacific Northwest National Laboratory (PNNL) , 902 Battelle Boulevard , Richland , Washington 99354 , United States
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
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Yoon B, Kim S, Lee YM, Ryou MH. Effect of the Quantity of Liquid Electrolyte on Self-Healing Electrostatic Shield Mechanism of CsPF 6 Additive for Li Metal Anodes. ACS Omega 2019; 4:11724-11727. [PMID: 31460278 PMCID: PMC6682109 DOI: 10.1021/acsomega.9b00928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/24/2019] [Indexed: 06/01/2023]
Abstract
We used a cesium hexafluorophosphate (CsPF6)-containing liquid electrolyte for surface-patterned Li metal anodes and confirmed that there is a synergistic improvement in the electrochemical performance such as cycle performance and rate capability. For instance, the surface-patterned Li metal maintains 91.4% of the initial discharge capacity after the 1000th cycle (C/2 = 0.8 mA cm-2 for charging, 1C for discharging). When a large quantity of the CsPF6-containing liquid electrolyte (600 μL) is used, the bare Li metal and surface-patterned Li metal are more effectively stabilized in comparison with the case where 80 μL of electrolyte is used, resulting in improved electrochemical performance. Through systematic testing, we recognize that these results are because of the self-healing electrostatic shield mechanism, which is mainly dependent on the amount of Cs+ ions. A small amount of Cs+ ions cannot effectively counteract the incoming Li+ ions because they cannot form an effective electrostatic shield on the protrusions present on the Li metal surface.
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Affiliation(s)
- Byeolhee Yoon
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 34158, Republic
of Korea
| | - SeokWoo Kim
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 34158, Republic
of Korea
| | - Yong Min Lee
- Department
of Energy Systems Engineering, Daegu Gyeongbuk
Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Daegu 42988, Republic
of Korea
| | - Myung-Hyun Ryou
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 34158, Republic
of Korea
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12
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Jo H, Oh J, Lee YM, Ryou MH. Effect of Varying the Ratio of Carbon Black to Vapor-Grown Carbon Fibers in the Separator on the Performance of Li⁻S Batteries. Nanomaterials (Basel) 2019; 9:nano9030436. [PMID: 30875936 PMCID: PMC6474014 DOI: 10.3390/nano9030436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/06/2019] [Accepted: 03/12/2019] [Indexed: 11/29/2022]
Abstract
Lithium–sulfur (Li–S) batteries are expected to be very useful for next-generation transportation and grid storage because of their high energy density and low cost. However, their low active material utilization and poor cycle life limit their practical application. The use of a carbon-coated separator in these batteries serves to inhibit the migration of the lithium polysulfide intermediate and increases the recyclability. We report the extent to which the electrochemical performance of Li–S battery systems depends on the characteristics of the carbon coating of the separator. Carbon-coated separators containing different ratios of carbon black (Super-P) and vapor-grown carbon fibers (VGCFs) were prepared and evaluated in Li–S batteries. The results showed that larger amounts of Super-P on the carbon-coated separator enhanced the electrochemical performance of Li–S batteries; for instance, the pure Super-P coating exhibited the highest discharge capacity (602.1 mAh g−1 at 150 cycles) with a Coulombic efficiency exceeding 95%. Furthermore, the separators with the pure Super-P coating had a smaller pore structure, and hence, limited polysulfide migration, compared to separators containing Super-P/VGCF mixtures. These results indicate that it is necessary to control the porosity of the porous membrane to control the movement of the lithium polysulfide.
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Affiliation(s)
- Hearin Jo
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea.
| | - Jeonghun Oh
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea.
| | - Yong Min Lee
- Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-Daero, Daegu 42988, Korea.
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea.
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13
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Jeon H, Roh Y, Jin D, Ryou MH, Jeong YC, Lee YM. Crosslinkable polyhedral silsesquioxane-based ceramic-coated separators for Li-ion batteries. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.11.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Kim YJ, Jin HS, Lee DH, Choi J, Jo W, Noh H, Lee J, Chu H, Kwack H, Ye F, Lee H, Ryou MH, Kim HT. Cover Feature: Guided Lithium Deposition by Surface Micro-Patterning of Lithium-Metal Electrodes (ChemElectroChem 21/2018). ChemElectroChem 2018. [DOI: 10.1002/celc.201801329] [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: 11/09/2022]
Affiliation(s)
- Yun-Jung Kim
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hyun S. Jin
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Dong-Hyun Lee
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Jaeho Choi
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Wonhee Jo
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hyungjun Noh
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Jinhong Lee
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hyunwon Chu
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hobeom Kwack
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Fangmin Ye
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
- Advanced Battery Center; KAIST Institute for the NanoCentury; Korea Advanced Institute of Science and Technology; 335 Gwahangno Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hongkyung Lee
- Energy and Environment Directorate; Pacific Northwest National Laboratory; 902 Battelle Boulevard Richland, WA 99354 USA
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering; Hanbat National University; 125 Dongseo-daero Yuseong-gu, Daejeon 34158 Republic of Korea
| | - Hee-Tak Kim
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
- Advanced Battery Center; KAIST Institute for the NanoCentury; Korea Advanced Institute of Science and Technology; 335 Gwahangno Yuseong-gu Daejeon 34141 Republic of Korea
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15
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Kim YJ, Jin HS, Lee DH, Choi J, Jo W, Noh H, Lee J, Chu H, Kwack H, Ye F, Lee H, Ryou MH, Kim HT. Guided Lithium Deposition by Surface Micro-Patterning of Lithium-Metal Electrodes. ChemElectroChem 2018. [DOI: 10.1002/celc.201800694] [Citation(s) in RCA: 14] [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: 11/07/2022]
Affiliation(s)
- Yun-Jung Kim
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hyun S. Jin
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Dong-Hyun Lee
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Jaeho Choi
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Wonhee Jo
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hyungjun Noh
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Jinhong Lee
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hyunwon Chu
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Hobeom Kwack
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
| | - Fangmin Ye
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
- Advanced Battery Center; KAIST Institute for the NanoCentury; Korea Advanced Institute of Science and Technology; 335 Gwahangno Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hongkyung Lee
- Energy and Environment Directorate; Pacific Northwest National Laboratory; 902 Battelle Boulevard Richland, WA 99354 USA
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering; Hanbat National University; 125 Dongseo-daero Yuseong-gu, Daejeon 34158 Republic of Korea
| | - Hee-Tak Kim
- Department of Chemical and Biomolecular Engineering; Korea Advanced Institute of Science and Technology; 291 Daehak-ro Yuseong-gu, Daejeon 34141 Republic of Korea
- Advanced Battery Center; KAIST Institute for the NanoCentury; Korea Advanced Institute of Science and Technology; 335 Gwahangno Yuseong-gu Daejeon 34141 Republic of Korea
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16
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Kim S, Park J, Friesen A, Lee H, Lee YM, Ryou MH. Composite protection layers for dendrite-suppressing non-granular micro-patterned lithium metal anodes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.102] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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17
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Kim K, Byun S, Choi J, Hong S, Ryou MH, Lee YM. Elucidating the Polymeric Binder Distribution within Lithium-Ion Battery Electrodes Using SAICAS. Chemphyschem 2018; 19:1627-1634. [PMID: 29603536 DOI: 10.1002/cphc.201800072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Indexed: 11/11/2022]
Abstract
Polymeric binder distribution within electrodes is crucial to guarantee the electrochemical performance of lithium-ion batteries (LIBs) for their long-term use in applications such as electric vehicles and energy-storage systems. However, due to limited analytical tools, such analyses have not been conducted so far. Herein, the adhesion properties of LIB electrodes at different depths are measured using a surface and interfacial cutting analysis system (SAICAS). Moreover, two LiCoO2 electrodes, dried at 130 and 230 °C, are carefully prepared and used to obtain the adhesion properties at every 10 μm of depth as well as the interface between the electrode composite and the current collector. At high drying temperatures, more of the polymeric binder material and conductive agent appears adjacent to the electrode surface, resulting in different adhesion properties as a function of depth. When the electrochemical properties are evaluated at different temperatures, the LiCoO2 electrode dried at 130 °C shows a much better high-temperature cycling performance than does the electrode dried at 230 °C due to the uniform adhesion properties and the higher interfacial adhesion strength.
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Affiliation(s)
- Kyuman Kim
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, Republic of Korea
| | - Seoungwoo Byun
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Jaecheol Choi
- ARC Centre of Excellence for Electromaterials Science and the Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Seungbum Hong
- Department of Materials Science and Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, Republic of Korea
| | - Yong Min Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu, 42988, Republic of Korea
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18
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Jin D, Oh J, Friesen A, Kim K, Jo T, Lee YM, Ryou MH. Self-Healing Wide and Thin Li Metal Anodes Prepared Using Calendared Li Metal Powder for Improving Cycle Life and Rate Capability. ACS Appl Mater Interfaces 2018; 10:16521-16530. [PMID: 29737830 DOI: 10.1021/acsami.8b02740] [Citation(s) in RCA: 6] [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] [Indexed: 06/08/2023]
Abstract
The commercialization of Li metal electrodes is a long-standing objective in the battery community. To accomplish this goal, the formation of Li dendrites and mossy Li deposition, which cause poor cycle performance and safety issues, must be resolved. In addition, it is necessary to develop wide and thin Li metal anodes to increase not only the energy density, but also the design freedom of large-scale Li-metal-based batteries. We solved both issues by developing a novel approach involving the application of calendared stabilized Li metal powder (LiMP) electrodes as anodes. In this study, we fabricated a 21.5 cm wide and 40 μm thick compressed LiMP electrode and investigated the correlation between the compression level and electrochemical performance. A high level of compression (40% compression) physically activated the LiMP surface to suppress the dendritic and mossy Li metal formation at high current densities. Furthermore, as a result of the LiMP self-healing because of electrochemical activation, the 40% compressed LiMP electrode exhibited an excellent cycle performance (reaching 90% of the initial discharge capacity after the 360th cycle), which was improved by more than a factor of 2 compared to that of a flat Li metal foil with the same thickness (90% of the initial discharge capacity after the 150th cycle).
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Affiliation(s)
- Dahee Jin
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Jeonghun Oh
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Alex Friesen
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Kyuman Kim
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
| | - Taejin Jo
- Iljin Materials , 45, Mapo-daero , Mapo-gu, Seoul , 04167 , Republic of Korea
| | - Yong Min Lee
- Department of Energy Systems Engineering , Daegu Gyeongbuk Institute of Science and Technology (DGIST) , 333 Techno Jungang-Daero , Daegu 42988 , Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering , Hanbat National University , 125 Dongseo-daero , Yuseong-gu, Daejeon , 34158 , Republic of Korea
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19
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Jin D, Song D, Friesen A, Lee YM, Ryou MH. Effect of Al2O3 ceramic fillers in LiNi1/3Co1/3Mn1/3O2 cathodes for improving high-voltage cycling and rate capability performance. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Oh J, Jin D, Kim K, Song D, Lee YM, Ryou MH. Improving the Cycling Performance of Lithium-Ion Battery Si/Graphite Anodes Using a Soluble Polyimide Binder. ACS Omega 2017; 2:8438-8444. [PMID: 31457381 PMCID: PMC6645015 DOI: 10.1021/acsomega.7b01365] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/16/2017] [Indexed: 06/10/2023]
Abstract
Herein, we improved the performance of Si/graphite (Si/C) composite anodes by introducing a highly adhesive co-polyimide (P84) binder and investigated the relationship between their electrochemical and adhesion properties using the 90° peel test and a surface and interfacial cutting analysis system. Compared to those of conventional poly(vinylidene fluoride) (PVdF)-based electrodes, the cycling performance and rate capability of P84-based Si/C anodes were improved by 47.0% (372 vs 547 mAh g-1 after 100 cycles at a 60 mA g-1 discharge condition) and 33.4% (359 vs 479 mAh g-1 after 70 cycles at a 3.0 A g-1 discharge condition), respectively. Importantly, the P84-based electrodes exhibited less pronounced morphological changes and a smaller total cell resistance after cycling than the PVdF-based ones, also showing better interlayer adhesion (F mid) and interfacial adhesion to Cu current collectors (F inter).
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Affiliation(s)
- Jeonghun Oh
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic
of Korea
| | - Dahee Jin
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic
of Korea
| | - Kyuman Kim
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic
of Korea
| | - Danoh Song
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic
of Korea
| | - Yong Min Lee
- Department
of Energy Systems Engineering, Daegu Gyeongbuk
Institute of Science and Technology (DGIST), 333 Techno Jungang-Daero, Daegu 42988, Republic
of Korea
| | - Myung-Hyun Ryou
- Department
of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic
of Korea
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21
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22
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Lee J, Jeon H, Han T, Ryou MH, Lee YM. Nano Ceramic Coating on Polypropylene Separator for Safety-Enhanced Lithium Secondary Battery. Journal of the Korean Electrochemical Society 2017. [DOI: 10.5229/jkes.2017.20.2.41] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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23
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Jeon H, Choi J, Ryou MH, Lee YM. Comparative Study of the Adhesion Properties of Ceramic Composite Separators Using a Surface and Interfacial Cutting Analysis System for Lithium-Ion Batteries. ACS Omega 2017; 2:2159-2164. [PMID: 31457568 PMCID: PMC6641004 DOI: 10.1021/acsomega.7b00493] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 05/05/2017] [Indexed: 05/31/2023]
Abstract
Because of the constantly increasing demand for highly safe lithium-ion batteries (LIBs), interest in the development of ceramic composite separators (CCSs) is growing rapidly. Here, an in-depth study of the adhesion properties of the Al2O3 ceramic composite coating layer of CCSs is conducted using a peel test and a surface and interfacial cutting analysis system (SAICAS). Contrary to the 90 and 180° peel tests, which resulted in different adhesion strengths even for the same CCS sample, the SAICAS is able to measure the adhesion properties uniformly as a function of depth from the surface of the coating layer. The adhesion strengths measured at the midlayer (F mid) and interface (F inter, interlayer between the separator and the ceramic coating layer) are compared for various types of CCS samples with different amounts of polymeric binder, and it is found that F inter is higher than F mid for all CCSs. Compared with F mid, F inter is significantly affected by storage in the liquid electrolyte (under wet condition).
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Affiliation(s)
| | | | - Myung-Hyun Ryou
- E-mail: . Tel: +82-42-821-1534. Fax: +82-42-821-1534 (M.-H.R.)
| | - Yong Min Lee
- E-mail: . Tel: +82-53-785-6425. Fax: +82-53-785-6409 (Y.M.L.)
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Gong S, Jeon H, Lee H, Ryou MH, Lee YM. Effects of an Integrated Separator/Electrode Assembly on Enhanced Thermal Stability and Rate Capability of Lithium-Ion Batteries. ACS Appl Mater Interfaces 2017; 9:17814-17821. [PMID: 28472879 DOI: 10.1021/acsami.7b00044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To improve the rate capability and safety of lithium-ion batteries (LIBs), we developed an integrated separator/electrode by gluing polyethylene (PE) separators and electrodes using a polymeric adhesive (poly(vinylidene fluoride), PVdF). To fabricate thin and uniform polymer coating layers on the substrate, we applied the polymer solution using a spray-coating technique. PVdF was chosen because of its superior mechanical properties and stable electrochemical properties within the voltage range of commercial LIBs. The integrated separator/electrode showed superior thermal stability compared to that of the control PE separators. Although PVdF coating layers partially blocked the porous structures of the PE separators, resulting in reduced ionic conductivity (control PE = 0.666 mS cm-1, PVdF-coated PE = 0.617 mS cm-1), improved interfacial properties between the separators and the electrodes were obtained due to the intimate contact, and the rate capabilities of the LIBs based on integrated separators/electrodes showed 176.6% improvement at the 7 C rate (LIBs based on PVdF-coated and control PE maintained 48.4 and 27.4% of the initial discharge capacity, respectively).
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Affiliation(s)
- Seokhyeon Gong
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Hyunkyu Jeon
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Hoogil Lee
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
- Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST) , Daegu 42988, Republic of Korea
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Kim YJ, Lee H, Noh H, Lee J, Kim S, Ryou MH, Lee YM, Kim HT. Enhancing the Cycling Stability of Sodium Metal Electrodes by Building an Inorganic-Organic Composite Protective Layer. ACS Appl Mater Interfaces 2017; 9:6000-6006. [PMID: 28121126 DOI: 10.1021/acsami.6b14437] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Owing to the natural abundance of sodium resources and their low price, next-generation batteries employing an Na metal anode, such as Na-O2 and Na-S systems, have attracted a great deal of interest. However, the poor reversibility of an Na metal electrode during repeated electrochemical plating and stripping is a major obstacle to realizing rechargeable sodium metal batteries. It mainly originates from Na dendrite formation and exhaustive electrolyte decomposition due to the high reactivity of Na metal. Herein, we report a free-standing composite protective layer (FCPL) for enhancing the reversibility of an Na metal electrode by mechanically suppressing Na dendritic growth and mitigating the electrolyte decomposition. A systematic variation of the liquid electrolyte uptake of FCPL verifies the existence of a critical shear modulus for suppressing Na dendrite growth, being in good agreement with a linear elastic theory, and emphasizes the importance of the ionic conductivity of FCPL for attaining uniform Na plating and stripping. The Na-Na symmetric cell with an optimized FCPL exhibits a cycle life two times longer than that of a bare Na electrode.
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Affiliation(s)
- Yun-Jung Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hongkyung Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyungjun Noh
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jinhong Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Seokwoo Kim
- Department of Chemical and Biological Engineering, Hanbat National University , Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University , Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering, Hanbat National University , Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Hee-Tak Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
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Byun S, Park J, Appiah WA, Ryou MH, Lee YM. The effects of humidity on the self-discharge properties of Li(Ni1/3Co1/3Mn1/3)O2/graphite and LiCoO2/graphite lithium-ion batteries during storage. RSC Adv 2017. [DOI: 10.1039/c6ra28516c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Exposure of battery tabs to humid air triggers self-discharge of batteries because of the induction effect of polar water molecules.
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Affiliation(s)
- Seoungwoo Byun
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
- Department of Energy Systems Engineering
| | - Joonam Park
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
| | - Williams Agyei Appiah
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
- Department of Energy Systems Engineering
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
- Department of Energy Systems Engineering
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27
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Jeon H, Cho I, Jo H, Kim K, Ryou MH, Lee YM. Highly rough copper current collector: improving adhesion property between a silicon electrode and current collector for flexible lithium-ion batteries. RSC Adv 2017. [DOI: 10.1039/c7ra04598k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Rough Cu foil enhances the adhesion properties between Si electrode composites and Cu foil due to physical interlocking.
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Affiliation(s)
- Hyunkyu Jeon
- Department of Chemical & Biological Engineering
- Hanbat National University
- Daejeon 34158
- Republic of Korea
| | - Inseong Cho
- Department of Chemical & Biological Engineering
- Hanbat National University
- Daejeon 34158
- Republic of Korea
| | - Hearin Jo
- Department of Chemical & Biological Engineering
- Hanbat National University
- Daejeon 34158
- Republic of Korea
| | - Kyuman Kim
- Department of Chemical & Biological Engineering
- Hanbat National University
- Daejeon 34158
- Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical & Biological Engineering
- Hanbat National University
- Daejeon 34158
- Republic of Korea
| | - Yong Min Lee
- Department of Energy Systems Engineering
- Daegu Gyeongbuk Institute of Science and Technology (DGIST)
- Daegu 42988
- Republic of Korea
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28
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Kim K, Byun S, Cho I, Ryou MH, Lee YM. Three-Dimensional Adhesion Map Based on Surface and Interfacial Cutting Analysis System for Predicting Adhesion Properties of Composite Electrodes. ACS Appl Mater Interfaces 2016; 8:23688-23695. [PMID: 27398829 DOI: 10.1021/acsami.6b06344] [Citation(s) in RCA: 8] [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] [Indexed: 06/06/2023]
Abstract
Using a surface and interfacial cutting analysis system (SAICAS) that can measure the adhesion strength of a composite electrode at a specific depth from the surface, we can subdivide the adhesion strength of a composite electrode into two classes: (1) the adhesion strength between the Al current collector and the cathode composite electrode (FAl-Ca) and (2) the adhesion strength measured at the mid-depth of the cathode composite electrode (Fmid). Both adhesion strengths, FAl-Ca and Fmid, increase with increasing electrode density and loading level. From the SAICAS measurement, we obtain a mathematical equation that governs the adhesion strength of the composite electrodes. This equation revealed a maximum accuracy of 97.2% and 96.1% for FAl-Ca and Fmid, respectively, for four randomly chosen composite electrodes varying in electrode density and loading level.
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Affiliation(s)
- Kyuman Kim
- Department of Chemical and Biological Engineering, Hanbat National University , 125, Dongseodaero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Seoungwoo Byun
- Department of Chemical and Biological Engineering, Hanbat National University , 125, Dongseodaero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Inseong Cho
- Department of Chemical and Biological Engineering, Hanbat National University , 125, Dongseodaero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University , 125, Dongseodaero, Yuseong-gu, Daejeon 34158, Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering, Hanbat National University , 125, Dongseodaero, Yuseong-gu, Daejeon 34158, Republic of Korea
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29
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Jeon H, Jin SY, Park WH, Lee H, Kim HT, Ryou MH, Lee YM. Plasma-assisted water-based Al2O3 ceramic coating for polyethylene-based microporous separators for lithium metal secondary batteries. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.172] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lee H, Han T, Cho KY, Ryou MH, Lee YM. Dopamine as a Novel Electrolyte Additive for High-Voltage Lithium-Ion Batteries. ACS Appl Mater Interfaces 2016; 8:21366-21372. [PMID: 27509406 DOI: 10.1021/acsami.6b06074] [Citation(s) in RCA: 12] [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] [Indexed: 06/06/2023]
Abstract
Dopamine, which can be electrochemically oxidized to polydopamine on cathode surface, was introduced as an electrolyte additive for high-voltage lithium-ion batteries (LIBs). The addition of 0.1 wt % dopamine to the electrolyte led to the formation of a polydopamine-containing layer on the cathode, thereby resulting in suppression of the oxidative decomposition of the electrolyte during high-voltage operation (up to 4.5 V) of a LiNi1/3Co1/3Mn1/3O2/artificial graphite cell. The addition of dopamine to the electrolyte improved the capacity retention of the cell from 136 to 147 mAh g(-1) after 100 cycles at a rate of 1 C and a cutoff voltage of 4.5 V, while the cycle performance and rate capability with a cutoff voltage of 4.3 V were comparable to those of the cell without dopamine. Further evidence of the positive impact of dopamine on high-voltage LIBs was the lower DC-IRs and AC impedances, as well as the retention of the cathode morphology even after operation at 4.5 V.
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Affiliation(s)
- Hoogil Lee
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, Republic of Korea
| | - Taeyeong Han
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, Republic of Korea
| | - Kuk Young Cho
- Department of Materials Science and Chemical Engineering, Hanyang University , 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering, Hanbat National University , 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, Republic of Korea
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31
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Appiah WA, Park J, Van Khue L, Lee Y, Choi J, Ryou MH, Lee YM. Comparative study on experiments and simulation of blended cathode active materials for lithium ion batteries. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.11.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Song D, Lee SH, Kim K, Ryou MH, Park WH, Lee YM. Soluble Polyimide Binder for Silicon Electrodes in Lithium Secondary Batteries. Applied Chemistry for Engineering 2015. [DOI: 10.14478/ace.2015.1095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Choi J, Kim K, Jeong J, Cho KY, Ryou MH, Lee YM. Highly Adhesive and Soluble Copolyimide Binder: Improving the Long-Term Cycle Life of Silicon Anodes in Lithium-Ion Batteries. ACS Appl Mater Interfaces 2015; 7:14851-14858. [PMID: 26075943 DOI: 10.1021/acsami.5b03364] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A highly adhesive and thermally stable copolyimide (P84) that is soluble in organic solvents is newly applied to silicon (Si) anodes for high energy density lithium-ion batteries. The Si anodes with the P84 binder deliver not only a little higher initial discharge capacity (2392 mAh g(-1)), but also fairly improved Coulombic efficiency (71.2%) compared with the Si anode using conventional polyvinylidene fluoride binder (2148 mAh g(-1) and 61.2%, respectively), even though P84 is reduced irreversibly during the first charging process. This reduction behavior of P84 was systematically confirmed by cyclic voltammetry and Fourier-transform infrared analysis in attenuated total reflection mode of the Si anodes at differently charged voltages. The Si anode with P84 also shows ultrastable long-term cycle performance of 1313 mAh g(-1) after 300 cycles at 1.2 A g(-1) and 25 °C. From the morphological analysis on the basis of scanning electron microscopy and optical images and of the electrode adhesion properties determined by surface and interfacial cutting analysis system and peel tests, it was found that the P84 binder functions well and maintains the mechanical integrity of Si anodes during hundreds of cycles. As a result, when the loading level of the Si anode is increased from 0.2 to 0.6 mg cm(-2), which is a commercially acceptable level, the Si anode could deliver 647 mAh g(-1) until the 300th cycle, which is still two times higher than the theoretical capacity of graphite at 372 mAh g(-1).
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Affiliation(s)
- Jaecheol Choi
- †Department of Chemical and Biological Engineering, Hanbat National University, 125, Dongseo-daero, Yuseong-gu, Daejeon 305-719, Republic of Korea
- ‡Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Kyuman Kim
- †Department of Chemical and Biological Engineering, Hanbat National University, 125, Dongseo-daero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Jiseon Jeong
- †Department of Chemical and Biological Engineering, Hanbat National University, 125, Dongseo-daero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Kuk Young Cho
- §Division of Advanced Materials Engineering, Kongju National University, 275, Budae-dong, Cheonan, Chungnam 331-717, Republic of Korea
| | - Myung-Hyun Ryou
- †Department of Chemical and Biological Engineering, Hanbat National University, 125, Dongseo-daero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Yong Min Lee
- †Department of Chemical and Biological Engineering, Hanbat National University, 125, Dongseo-daero, Yuseong-gu, Daejeon 305-719, Republic of Korea
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Jeong J, Lee JN, Park JK, Ryou MH, Lee YM. Stabilizing effect of 2-(triphenylphosphoranylidene) succinic anhydride as electrolyte additive on the lithium metal of lithium metal secondary batteries. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.04.168] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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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35
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Jeong J, Lee H, Lee H, Ryou MH, Lee YM. Effects of Lithium Bis(Oxalate) Borate as an Electrolyte Additive on High-Temperature Performance of Li(Ni 1/3Co 1/3Mn 1/3)O 2/Graphite Cells. Journal of the Korean Electrochemical Society 2015. [DOI: 10.5229/jkes.2015.18.2.58] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Cho I, Choi J, Kim K, Ryou MH, Lee YM. A comparative investigation of carbon black (Super-P) and vapor-grown carbon fibers (VGCFs) as conductive additives for lithium-ion battery cathodes. RSC Adv 2015. [DOI: 10.1039/c5ra19056h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synergistic effect of different types of conductive additives, vapor-grown carbon fibers (VGCF) and carbon black (Super-P) on the cathode performance of lithium-ion batteries was investigated.
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Affiliation(s)
- Inseong Cho
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
| | - Jaecheol Choi
- Intelligent Polymer Research Institute
- ARC Centre of Excellence for Electromaterials Science
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - Kyuman Kim
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719
- Republic of Korea
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38
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Lee T, Lee Y, Ryou MH, Lee YM. A facile approach to prepare biomimetic composite separators toward safety-enhanced lithium secondary batteries. RSC Adv 2015. [DOI: 10.1039/c5ra01061f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A mussel-inspired polydopamine (PDA) coating makes radio-frequency Al2O3 sputtering a damage-free, reliable, and cost-efficient process for polyethylene (PE) surface modification for lithium secondary batteries (LIBs).
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Affiliation(s)
- Taejoo Lee
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719, Republic of Korea
| | - Yunju Lee
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719, Republic of Korea
| | - Myung-Hyun Ryou
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719, Republic of Korea
| | - Yong Min Lee
- Department of Chemical and Biological Engineering
- Hanbat National University
- Daejeon 305-719, Republic of Korea
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39
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Lee DJ, Lee H, Song J, Ryou MH, Lee YM, Kim HT, Park JK. Composite protective layer for Li metal anode in high-performance lithium–oxygen batteries. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2013.12.022] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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40
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Son B, Ryou MH, Choi J, Lee T, Yu HK, Kim JH, Lee YM. Measurement and analysis of adhesion property of lithium-ion battery electrodes with SAICAS. ACS Appl Mater Interfaces 2014; 6:526-31. [PMID: 24321010 DOI: 10.1021/am404580f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The adhesion strength of lithium-ion battery (LIB) electrodes consisting of active material, a nanosized electric conductor, and a polymeric binder is measured with a new analysis tool, called the Surface and Interfacial Cutting Analysis System (SAICAS). Compared to the conventional peel test with the same electrode, SAICAS gives higher adhesion strength owing to its elaborate cutting-based measurement system. In addition, the effects on the adhesion property of the polymeric binder type and content, electrode density, and measuring point are also investigated to determine whether SAICAS provides reliable results. The findings confirm SAICAS as an effective and promising tool to measure and analyze the adhesion properties of LIB electrodes.
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Affiliation(s)
- Bongki Son
- Department of Chemical and Biological Engineering, Hanbat National University , Deokmyoung-dong, Yuseong-gu, Daejeon 305-719, Republic of Korea
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Han GB, Lee JN, Lee DJ, Lee H, Song J, Lee H, Ryou MH, Park JK, Lee YM. Enhanced cycling performance of lithium metal secondary batteries with succinic anhydride as an electrolyte additive. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.11.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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42
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Lee Y, Ryou MH, Seo M, Choi JW, Lee YM. Effect of polydopamine surface coating on polyethylene separators as a function of their porosity for high-power Li-ion batteries. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.09.104] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Lee DJ, Lee H, Ryou MH, Han GB, Lee JN, Song J, Choi J, Cho KY, Lee YM, Park JK. Electrospun three-dimensional mesoporous silicon nanofibers as an anode material for high-performance lithium secondary batteries. ACS Appl Mater Interfaces 2013; 5:12005-12010. [PMID: 24195666 DOI: 10.1021/am403798a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Mesoporous silicon nanofibers (m-SiNFs) have been fabricated using a simple and scalable method via electrospinning and reduction with magnesium. The prepared m-SiNFs have a unique structure in which clusters of the primary Si nanoparticles interconnect to form a secondary three-dimensional mesoporous structure. Although only a few nanosized primary Si particles lead to faster electronic and Li(+) ion diffusion compared to tens of nanosized Si, the secondary nanofiber structure (a few micrometers in length) results in the uniform distribution of the nanoparticles, allowing for the easy fabrication of electrodes. Moreover, these m-SiNFs exhibit impressive electrochemical characteristics when used as the anode materials in lithium ion batteries (LIBs). These include a high reversible capacity of 2846.7 mAh g(-1) at a current density of 0.1 A g(-1), a stable capacity retention of 89.4% at a 1 C rate (2 A g(-1)) for 100 cycles, and a rate capability of 1214.0 mAh g(-1) (at 18 C rate for a discharge time of ∼3 min).
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Affiliation(s)
- Dong Jin Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
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Lee DJ, Ryou MH, Lee JN, Kim BG, Lee YM, Kim HW, Kong BS, Park JK, Choi JW. Nitrogen-doped carbon coating for a high-performance SiO anode in lithium-ion batteries. Electrochem commun 2013. [DOI: 10.1016/j.elecom.2013.05.029] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abstract
The rice husk is the outer covering of a rice kernel and protects the inner ingredients from external attack by insects and bacteria. To perform this function while ventilating air and moisture, rice plants have developed unique nanoporous silica layers in their husks through years of natural evolution. Despite the massive amount of annual production near 10(8) tons worldwide, so far rice husks have been recycled only for low-value agricultural items. In an effort to recycle rice husks for high-value applications, we convert the silica to silicon and use it for high-capacity lithium battery anodes. Taking advantage of the interconnected nanoporous structure naturally existing in rice husks, the converted silicon exhibits excellent electrochemical performance as a lithium battery anode, suggesting that rice husks can be a massive resource for use in high-capacity lithium battery negative electrodes.
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Affiliation(s)
- Dae Soo Jung
- Graduate School of Energy Environment Water Sustainability (World Class University) and KAIST Institute NanoCentury and
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Yuseong Gu, Daejeon 305-701, Korea; and
| | - Myung-Hyun Ryou
- Graduate School of Energy Environment Water Sustainability (World Class University) and KAIST Institute NanoCentury and
| | - Yong Joo Sung
- Department of Bio-Based Materials, Chungnam National University, Yuseong Gu, Daejeon 305-764, Korea
| | - Seung Bin Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Yuseong Gu, Daejeon 305-701, Korea; and
| | - Jang Wook Choi
- Graduate School of Energy Environment Water Sustainability (World Class University) and KAIST Institute NanoCentury and
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Choi J, Son B, Ryou MH, Kim SH, Ko JM, Lee YM. Effect of LiCoO2 Cathode Density and Thickness on Electrochemical Performance of Lithium-Ion Batteries. J ELECTROCHEM SCI TE 2013. [DOI: 10.33961/jecst.2013.4.1.27] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [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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Choi J, Son B, Ryou MH, Kim SH, Ko JM, Lee YM. Effect of LiCoO2Cathode Density and Thickness on Electrochemical Performance of Lithium-Ion Batteries. J ELECTROCHEM SCI TE 2013. [DOI: 10.5229/jecst.2013.4.1.27] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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48
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Ryou MH, Kim J, Lee I, Kim S, Jeong YK, Hong S, Ryu JH, Kim TS, Park JK, Lee H, Choi JW. Mussel-inspired adhesive binders for high-performance silicon nanoparticle anodes in lithium-ion batteries. Adv Mater 2013; 25:1571-1576. [PMID: 23280515 DOI: 10.1002/adma.201203981] [Citation(s) in RCA: 257] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 11/08/2012] [Indexed: 05/27/2023]
Abstract
Conjugation of mussel-inspired catechol groups to various polymer backbones results in materials suitable as silicon anode binders. The unique wetness-resistant adhesion provided by the catechol groups allows the silicon nanoparticle electrodes to maintain their structure throughout the repeated volume expansion and shrinkage during lithiation cycling, thus facilitating substantially improved specific capacities and cycle lives of lithium-ion batteries.
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Affiliation(s)
- Myung-Hyun Ryou
- Graduate School of EEWS (WCU) and Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
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Lee JH, Shin WH, Ryou MH, Jin JK, Kim J, Choi JW. Functionalized graphene for high performance lithium ion capacitors. ChemSusChem 2012; 5:2328-2333. [PMID: 23112143 DOI: 10.1002/cssc.201200549] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Indexed: 06/01/2023]
Abstract
Lithium ion capacitors (LICs) have recently drawn considerable attention because they utilize the advantages of supercapacitors (high power) and lithium ion batteries (high energy). However, the energy densities of conventional LICs, which consist of a pair of graphite and activated carbon electrodes, are limited by the small capacities of the activated carbon cathodes. To overcome this limitation, we have engaged urea-reduced graphene oxide. The amide functional groups generated during the urea reduction facilitate the enolization processes for reversible Li binding, which improves the specific capacity by 37 % compared to those of conventional systems such as activated carbon and hydrazine-reduced graphene oxide. Utilizing the increased Li binding capability, when evaluated based on the mass of the active materials on both sides, the LICs based on urea-reduced graphene oxide deliver a specific energy density of approximately 106 Wh kg(total) (-1) and a specific power density of approximately 4200 W kg(total) (-1) with perfect capacity retention up to 1000 cycles. These values are far superior to those of previously reported LICs and supercapacitors, which suggests that appropriately treated graphene can be a promising electrode material for LICs.
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Affiliation(s)
- Ji Hoon Lee
- Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology, 373-1 Guseong Dong, Yuseong Gu, Daejon 305-701, Korea
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50
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Song J, Ryou MH, Son B, Lee JN, Lee DJ, Lee YM, Choi JW, Park JK. Co-polyimide-coated polyethylene separators for enhanced thermal stability of lithium ion batteries. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.06.078] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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