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タイトル: Real-time observations of lithium battery reactions-operando neutron diffraction analysis during practical operation.
著者: Taminato, Sou
Yonemura, Masao
Shiotani, Shinya
Kamiyama, Takashi
Torii, Shuki
Nagao, Miki
Ishikawa, Yoshihisa
Mori, Kazuhiro  KAKEN_id  orcid https://orcid.org/0000-0003-1085-4096 (unconfirmed)
Fukunaga, Toshiharu
Onodera, Yohei  KAKEN_id  orcid https://orcid.org/0000-0002-3080-6991 (unconfirmed)
Naka, Takahiro
Morishima, Makoto
Ukyo, Yoshio
Adipranoto, Dyah Sulistyanintyas
Arai, Hajime
Uchimoto, Yoshiharu  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-1491-2647 (unconfirmed)
Ogumi, Zempachi
Suzuki, Kota
Hirayama, Masaaki
Kanno, Ryoji
著者名の別形: 米村, 雅雄
神山, 崇
森, 一広
福永, 俊晴
右京, 良雄
荒井, 創
内本, 喜晴
小久見, 善八
菅野, 了次
発行日: 30-Jun-2016
出版者: Springer Nature
誌名: Scientific reports
巻: 6
論文番号: 28843
抄録: Among the energy storage devices for applications in electric vehicles and stationary uses, lithium batteries typically deliver high performance. However, there is still a missing link between the engineering developments for large-scale batteries and the fundamental science of each battery component. Elucidating reaction mechanisms under practical operation is crucial for future battery technology. Here, we report an operando diffraction technique that uses high-intensity neutrons to detect reactions in non-equilibrium states driven by high-current operation in commercial 18650 cells. The experimental system comprising a time-of-flight diffractometer with automated Rietveld analysis was developed to collect and analyse diffraction data produced by sequential charge and discharge processes. Furthermore, observations under high current drain revealed inhomogeneous reactions, a structural relaxation after discharge, and a shift in the lithium concentration ranges with cycling in the electrode matrix. The technique provides valuable information required for the development of advanced batteries.
記述: 充放電しているリチウム電池の内部挙動の解析に成功―中性子線を用い非破壊かつリアルタイム観測により実現―. 京都大学プレスリリース. 2016-07-06.
著作権等: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
URI: http://hdl.handle.net/2433/215875
DOI(出版社版): 10.1038/srep28843
PubMed ID: 27357605
関連リンク: https://www.kyoto-u.ac.jp/ja/research-news/2016-07-06-0
出現コレクション:学術雑誌掲載論文等

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