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タイトル: | Synchronized Operando Analysis of Graphite Negative Electrode of Li-Ion Battery |
著者: | Fujimoto, Hiroyuki Murakami, Miwa https://orcid.org/0000-0001-6209-4450 (unconfirmed) Yamanaka, Toshiro Shimoda, Keiji Kiuchi, Hisao Ogumi, Zempachi Abe, Takeshi |
著者名の別形: | 藤本, 宏之 村上, 美和 山中, 俊朗 下田, 景士 木内, 久雄 小久見, 善八 安部, 武志 |
発行日: | Aug-2021 |
出版者: | The Electrochemical Society IOP Publishing Limited |
誌名: | Journal of the Electrochemical Society |
巻: | 168 |
号: | 8 |
論文番号: | 080508 |
抄録: | Since the rechargeable Li-ion battery was invented in the early 1990s, its performance has evolved continually and Li-ion batteries are now installed in most mobile devices. In these batteries, graphite is used as a negative electrode material. However, the detailed reaction mechanism between graphite and Li remains unclear. Here we apply synchrotron X-ray diffraction, 7Li-nuclear magnetic resonance and Raman spectroscopy to operando analysis of the charge/discharge mechanism of a graphite electrode. The spectrum of the graphite electrode is measured repeatedly during the reaction. The operando dataset obtained is then analyzed synchronously with the composition of x in LiCx estimated from the charge/discharge curves. We propose a synchronized operando analysis method that provides useful information about the behavior of the C-C bond vibration mode and the interactions between Li and carbon atoms due to structural change during the charge/discharge reaction. In addition, we determine details of the intercalation mechanism. |
著作権等: | © 2021 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. |
URI: | http://hdl.handle.net/2433/275673 |
DOI(出版社版): | 10.1149/1945-7111/ac18e4 |
出現コレクション: | 学術雑誌掲載論文等 |
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