dc.citation.conferencePlace |
KO |
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dc.citation.title |
The 5th International Conference on Electronic Materials and Nanotechnology for Green Environment (ENGE2018) |
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dc.contributor.author |
Lee, Jun-Seo |
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dc.contributor.author |
Lee, Cheolmin |
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dc.contributor.author |
Lee, Jae-Yun |
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dc.contributor.author |
Ryu, Jungki |
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dc.contributor.author |
Ryu, Won-Hee |
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dc.date.accessioned |
2024-02-01T01:06:29Z |
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dc.date.available |
2024-02-01T01:06:29Z |
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dc.date.created |
2018-12-21 |
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dc.date.issued |
2018-11-13 |
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dc.description.abstract |
Nature-inspired molecules present a family of affordable, environmentally friendly catalysts to enable and enhance next-generation energy storage systems. In this study, we report the use of cobalt-based polyoxometalates (Co-POM) with an oxo-bridged tetracobalt active site, which is reminiscent of the natural oxygen-evolving complex, as an efficient and stable redox catalyst for Li-O2 batteries. Interestingly, Co-POM exhibits catalytic activity for both oxygen evolution and reduction reactions (OER and ORR, respectively) under a certain condition when it forms a stable dispersion of molecular aggregates, which can be controlled by types of electrolyte solvents and exposure to light. As a result of the optimized OER/ORR bifunctional activity, the Li-O2 cells facilitated by Co-POM redox reactions successfully achieve improved efficiency and a longer cycle life compared to reference cells. The reversibility of the Li-O2 reactions in the presence of the bifunctional Co-POM catalysts is confirmed by ex-situ characterizations. |
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dc.identifier.bibliographicCitation |
The 5th International Conference on Electronic Materials and Nanotechnology for Green Environment (ENGE2018) |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/80454 |
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dc.language |
영어 |
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dc.publisher |
The Korean Institute of Metals and Materials |
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dc.title |
Polyoxometalate as a Nature-Inspired Bifunctional Catalyst for Lithium-Oxygen Batteries |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2018-11-11 |
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