| アイテムタイプ |
共通アイテムタイプ(1) |
| 公開日 |
2025-01-16 |
| タイトル |
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|
タイトル |
Migration of binder and conductive agent during drying process of Li-ion battery cathodes |
|
言語 |
en |
| 著者 |
Kumano, Naomi
Yamaguchi, Yuhei
Akimoto, Yusuke
Ohshima, Ayako
Nakamura, Hiroshi
山村, 方人
|
| 著作権関連情報 |
|
|
権利情報 |
Copyright (c) 2023 Elsevier B.V. All rights reserved. |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Drying of an electrode film during a wet coating process for Li-ion batteries often leads to a heterogeneous distribution of the binder and conductive agent in the film thickness direction. Because this heterogeneous distribution affects battery performance and durability, understanding and controlling the migration behavior are important. Herein, the distribution of the components (active material/conductive agent/binder) of a cathode is investigated by a novel method and their relationship with the electrode properties is determined. The binder distribution is investigated via two methods: pyrolysis gas chromatography mass spectrometry (Py-GC/MS) analysis of cut electrodes, and low-voltage scanning electron microscopy with energy-dispersive X-ray spectroscopy. In the sample dried at 30 °C, more binder and conductive agent exists in the bottom layer. With increasing drying temperature, the binder and conductive agent migrate from the bottom to the surface because they are transported by capillary-driven convective flow through the pores between the active material particles. Drying at high temperatures causes migration, resulting in reduced adhesion between the electrode film and the current collector, and increases the electrode resistance. The Py-GC/MS method of characterizing the cut electrodes is shown to be a complementary method that can analyze a wider area than cross-sectional observation. |
|
言語 |
en |
| 書誌情報 |
en : Journal of Power Sources
巻 591,
p. 233883,
発行日 2023-12-01
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| 出版社 |
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|
出版者 |
Elsevier |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Li-ion battery |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Migration |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Cathode |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Binder distribution |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Conductive agent distribution |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.jpowsour.2023.233883 |
| NCID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00705373 |
| ISSN |
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収録物識別子タイプ |
PISSN |
|
収録物識別子 |
0378-7753 |
| ISSN |
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収録物識別子タイプ |
EISSN |
|
収録物識別子 |
1873-2755 |
| 査読の有無 |
|
|
値 |
yes |
| 研究者情報 |
|
|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/113_ja.html |
| 論文ID（連携） |
|
|
値 |
10443126 |
| 連携ID |
|
|
値 |
12471 |
10443126.pdf (2.1 MB)
