Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries
Rechargeable Zn-ion batteries working with manganese oxide cathodes and mild aqueous electrolytes suffer from notorious cathode dissolution during galvanostatic cycling. Herein, for the first time we demonstrate the dynamic self-recovery chemistry of manganese compound during charge/discharge proces...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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CELL PRESS
2020
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| Online Access: | http://purl.org/au-research/grants/arc/DP150104365 http://hdl.handle.net/20.500.11937/90778 |
| _version_ | 1848765425197776896 |
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| author | Zhong, Yijun Xu, Xiaomin Veder, Jean-Pierre Shao, Zongping |
| author_facet | Zhong, Yijun Xu, Xiaomin Veder, Jean-Pierre Shao, Zongping |
| author_sort | Zhong, Yijun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Rechargeable Zn-ion batteries working with manganese oxide cathodes and mild aqueous electrolytes suffer from notorious cathode dissolution during galvanostatic cycling. Herein, for the first time we demonstrate the dynamic self-recovery chemistry of manganese compound during charge/discharge processes, which strongly determines the battery performance. A cobalt-modified δ-MnO2 with a redox-active surface shows superior self-recovery capability as a cathode. The cobalt-containing species in the cathode enable efficient self-recovery by continuously catalyzing the electrochemical deposition of active Mn compound, which is confirmed by characterizations of both practical coin-type batteries and a new-design electrolyzer system. Under optimized condition, a high specific capacity over 500 mAh g−1 is achieved, together with a decent cycling performance with a retention rate of 63% over 5,000 cycles. With this cobalt-facilitated deposition effect, the battery with low concentration (0.02 M) of additive Mn2+ in the electrolyte (only 12 atom % to the overall Mn) maintains decent capacity retention. |
| first_indexed | 2025-11-14T11:35:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-90778 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:35:03Z |
| publishDate | 2020 |
| publisher | CELL PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-907782023-04-20T05:28:21Z Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries Zhong, Yijun Xu, Xiaomin Veder, Jean-Pierre Shao, Zongping Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics HIGH-CAPACITY RECENT PROGRESS CHALLENGES STORAGE OXIDE LIFE Rechargeable Zn-ion batteries working with manganese oxide cathodes and mild aqueous electrolytes suffer from notorious cathode dissolution during galvanostatic cycling. Herein, for the first time we demonstrate the dynamic self-recovery chemistry of manganese compound during charge/discharge processes, which strongly determines the battery performance. A cobalt-modified δ-MnO2 with a redox-active surface shows superior self-recovery capability as a cathode. The cobalt-containing species in the cathode enable efficient self-recovery by continuously catalyzing the electrochemical deposition of active Mn compound, which is confirmed by characterizations of both practical coin-type batteries and a new-design electrolyzer system. Under optimized condition, a high specific capacity over 500 mAh g−1 is achieved, together with a decent cycling performance with a retention rate of 63% over 5,000 cycles. With this cobalt-facilitated deposition effect, the battery with low concentration (0.02 M) of additive Mn2+ in the electrolyte (only 12 atom % to the overall Mn) maintains decent capacity retention. 2020 Journal Article http://hdl.handle.net/20.500.11937/90778 10.1016/j.isci.2020.100943 English http://purl.org/au-research/grants/arc/DP150104365 http://purl.org/au-research/grants/arc/DP160104835 http://creativecommons.org/licenses/by-nc-nd/4.0/ CELL PRESS fulltext |
| spellingShingle | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics HIGH-CAPACITY RECENT PROGRESS CHALLENGES STORAGE OXIDE LIFE Zhong, Yijun Xu, Xiaomin Veder, Jean-Pierre Shao, Zongping Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries |
| title | Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries |
| title_full | Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries |
| title_fullStr | Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries |
| title_full_unstemmed | Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries |
| title_short | Self-Recovery Chemistry and Cobalt-Catalyzed Electrochemical Deposition of Cathode for Boosting Performance of Aqueous Zinc-Ion Batteries |
| title_sort | self-recovery chemistry and cobalt-catalyzed electrochemical deposition of cathode for boosting performance of aqueous zinc-ion batteries |
| topic | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics HIGH-CAPACITY RECENT PROGRESS CHALLENGES STORAGE OXIDE LIFE |
| url | http://purl.org/au-research/grants/arc/DP150104365 http://purl.org/au-research/grants/arc/DP150104365 http://hdl.handle.net/20.500.11937/90778 |