書誌情報 : ACS Applied Materials & Interfaces,14,39459-39466 (2022).
DOI: 10.1021/acsami.2c06950
Atomic-Scale Observations of Oxygen Release Degradation in Sulfide-Based All-Solid-State Batteries with Layered Oxide Cathodes
DOI:
https://doi.org/10.51094/jxiv.5125キーワード:
All-solid-state batteries、 Oxygen release、 Cathode、 Scanning transmission electron microscopy、 Electron energy loss spectroscopy抄録
All-solid-state batteries exhibit considerable potential for applications in electric vehicles. Understanding and controlling the oxygen release from the layered cathode active material is essential in achieving long-term operation of all-solid-state batteries, because the oxygen release degrades the cat hode material and the solid electrolyte, triggering capacity degradation. In this study, we verified the specific interface where the oxygen release is accelerated, through atomic-scale scanning transmission electron microscopy and electron energy loss spectroscopy analysis. Oxygen release is suppressed at the interface where the LiNbO3 coating layer is sufficiently formed. Decomposition products on the solid electrolyte and the anti-site defect layers on the cathode surface are formed by oxygen release at the interface where the Li2S-P2S5 solid electrolyte and Li(Ni1/3Mn1/3Ni1/3)O2 cathode are in direct contact. These irreversible passivation layers lead to capacity degradation. In addition, we found that the exfoliation of the LiNbO3 coating from cathode not only physically breaks the Li conduction path, but also results in the oxygen release and the deterioration of cathode. These atomic-scale insights can further advance the development of all-solid-state batteries by suppressing the oxygen release.
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The authors declare no competing financial interest.ダウンロード *前日までの集計結果を表示します
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投稿日時: 2026-06-16 05:00:29 UTC
公開日時: 2026-06-19 07:41:44 UTC
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Copyright（c）2026
Kobayashi, Shunsuke
Hideaki Watanabe
Takeharu Kato
Fuminori Mizuno
Akihide Kuwabara
この作品は、Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licenseの下でライセンスされています。
