フルテキストファイル
著者
Yamaguchi Kazuki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University
Domi Yasuhiro Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University 研究者総覧 KAKEN
Usui Hiroyuki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University 研究者総覧 KAKEN
Shimizu Masahiro Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University
Matsumoto Kuninobu Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University
Nokami Toshiki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University 研究者総覧 KAKEN
Itoh Toshiyuki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University 研究者総覧 KAKEN
Sakaguchi Hiroki Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University/Center for Research on Green Sustainable Chemistry, Tottori University 研究者総覧 KAKEN
キーワード
Silicon
Li-ion battery
Ionic liquid electrolyte
Anion
Gas-deposition
抄録
We investigated the influence of the anions in ionic liquid electrolytes on the electrochemical
performance of a silicon (Si) negative electrode for a lithium-ion battery. While the electrode
exhibited poor cycle stability in tetrafluoroborate-based and propylene carbonate-based electrolytes, better cycle performance was achieved in bis(fluorosulfonyl)amide (FSA–)- and
bis(trifluoromethanesulfonyl)amide (TFSA–)-based electrolytes, in which the discharge capacity of a Si electrode was more than 1000 mA h g–1 at the 100th cycle. It is considered that a surface film derived from FSA–- and TFSA–-based electrolytes effectively suppressed continuous decomposition of the electrolyte. In a capacity limitation test, a discharge capacity of 1000 mA h g–1 was maintained even after about the 1600th cycle in the FSA–-based electrolyte, which corresponds to a cycle life almost twice as long as that in TFSA–-based electrolyte. This result should be explained by the high structural stability of FSA–-derived surface film. In addition, better rate capability with a discharge capacity of 700 mA h g–1 was obtained at a high current rate of 6 C (21 A g–1) in FSA–-based electrolyte, which was 7-fold higher than that in TFSA–-based electrolyte. These results clarified that FSA–-based ionic liquid electrolyte is the most promising candidate for Si-based negative electrodes.
出版者
Elsevier
資料タイプ
学術雑誌論文
外部リンク
ISSN
0378-7753
書誌ID
AA00705373
掲載誌名
Journal of Power Sources
最新掲載誌名
Journal of Power Sources
338
開始ページ
103
終了ページ
107
発行日
2017-01-15
出版者DOI
著者版フラグ
著者版
著作権表記
Copyright © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
掲載情報
This research was published by Elsevier Inc.: K. Yamaguchi, et al. Influence of the structure of the anion in an ionic liquid electrolyte on the electrochemical performance of a silicon negative electrode for a lithium-ion battery. Journal of Power Sources.2017, 338, 103-107
部局名
工学部・工学研究科
言語
英語