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タイトル: | Evolution of fluoride shuttle battery reactions and three-dimensional morphology changes of BiF3 microparticles in an ethylene carbonate-based liquid electrolyte |
著者: | Yamanaka, Toshiro Ogumi, Zempachi Abe, Takeshi |
著者名の別形: | 山中, 俊朗 小久見, 善八 安部, 武志 |
発行日: | 1-Sep-2022 |
出版者: | Royal Society of Chemistry (RSC) |
誌名: | Energy Advances |
巻: | 1 |
号: | 9 |
開始ページ: | 632 |
終了ページ: | 640 |
抄録: | Fluoride shuttle batteries (FSBs) use defluorination of metal fluorides and fluorination of metals, and they are considered as candidates of next-generation batteries with high energy densities. During FSB reactions of orthorhombic and cubic BiF₃ (o-BiF₃ and c-BiF₃, respectively) in an ethylene carbonate-based liquid electrolyte, in situ Raman mapping and in situ laser scanning confocal microscopy (LSCM) for three-dimensional analysis were conducted almost simultaneously. As the potential of o-BiF₃vs. Pb (E[WE]) was decreased to 0.4 V, desorption of F− started at the protrusions of o-BiF₃ particles. After defluorination, E[WE] was increased to 0.6 V, and c-BiF₃ appeared at protrusions of the surfaces of Bi. However, at the surfaces where o-BiF₃ partially remained, o-BiF₃ grew rather than c-BiF₃. The apparent volumes of particles increased during defluorination and fluorination. The results are important for determining reaction mechanisms, and the results indicate the possibility of the use of ethylene carbonate-based liquid electrolytes. |
著作権等: | © 2022 The Author(s). Published by the Royal Society of Chemistry This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
URI: | http://hdl.handle.net/2433/276823 |
DOI(出版社版): | 10.1039/D2YA00184E |
出現コレクション: | 学術雑誌掲載論文等 |
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