Chemical stability of Li4PS4I solid electrolyte against hydrolysis

Calpa, Marcela; Rosero-Navarro, Nataly Carolina; Miura, Akira; Jalem, Randy; Tateyama, Yoshitaka; Tadanaga, Kiyoharu

Chemical stability of Li4PS4I solid electrolyte against hydrolysis

Calpa, Marcela; Rosero-Navarro, Nataly Carolina; Miura, Akira et al.

Applied materials today, 2021, 22, 100918

Permalink : https://hdl.handle.net/2115/87555

このアイテムのアクセス数:378件（2026-08-10 16:38 集計）

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Calpa APMT-D-20-02215_R1 accepted version	pdf	1.21 MB	1,298
supplementary information (Calpa)	pdf	1.14 MB	315

論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/87555
タイトル	Chemical stability of Li4PS4I solid electrolyte against hydrolysis
著者	Calpa, Marcela ; Rosero-Navarro, Nataly Carolina ; Miura, Akira ; Jalem, Randy ; Tateyama, Yoshitaka ; Tadanaga, Kiyoharu
著者名 Calpa, Marcela
著者名 Rosero-Navarro, Nataly Carolina
e-Rad_Researcher 10603201 著者名 Miura, Akira
著者名 Jalem, Randy
著者名 Tateyama, Yoshitaka
e-Rad_Researcher 90244657 著者名 Tadanaga, Kiyoharu
言語	英語
キーワード	Solid electrolyte
	Sulfide electrolyte
	Chemical stability
	Lithium battery
	All-solid-state battery
発行日	2021-03
出版者	Elsevier
収録物名	Applied materials today
巻(号)	22
ページ	100918
抄録	Sulfide solid electrolytes in the Li3PS4-LiI system are promising for all-solid-state batteries owing to their high ionic conductivity in the order of 10(-4) S cm(-1) and electrochemical stability. Nonetheless, the low chemical stability tendency of sulfide-based materials under ambient atmosphere is a critical issue due to the generation of toxic H2S gas. In this study, the chemical stability of Li4PS4I (Li3PS4-LiI) solid electrolyte under ambient atmosphere was investigated and compared with that of Li3PS4 to analyze the effect of the incorporation of LiI on the chemical stability of sulfide-based electrolytes. No generation of H2S gas was detected in the Li4PS4I solid electrolyte after an exposure of 60 min to the ambient atmosphere with high relative humidity of 40%. The hydrolysis suppression is attributed to the formation of LiI center dot H2O, acting as a protective barrier between PS43- units in the electrolyte and H2O molecules in air. The structural reversibility of Li4PS4I by simple drying at 180 degrees C was confirmed and the solid electrolyte exhibited an ionic conductivity of 10(-4) S cm(-1) at room temperature, similar to that of the sample before the exposure to the ambient atmosphere.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	2352-9407
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.apmt.2020.100918