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Title
Japanese: 
English:Ex-situ Analysis of Lithium Distribution in a Sulfide-based All-solid-state Lithium Battery by Particle-induced X-ray and Gamma-ray Emission Measurements 
Author
Japanese: 山田悠斗, 鈴木耕太, 吉野和宙, 田港聡, 佐藤 隆博, Martin Finsterbusch, 神谷 富裕, 山崎 明義, 加藤 義章, 藤田 和久, 三間圀興, 堀智, 平山雅章, 菅野了次.  
English: Yuto Yamada, Kota Suzuki, Kazuhiro Yoshino, Sou Taminato, Takahiro Satoh, Martin Finsterbusch, Tomihiro Kamiya, Akiyoshi Yamazaki, Yoshiaki Kato, Kazuhisa Fujita, Kunioki Mima, Satoshi Hori, Masaaki Hirayama, Ryoji Kanno.  
Language English 
Journal/Book name
Japanese: 
English:Electrochemistry 
Volume, Number, Page volume 88    Issue 1    Pages 45-49
Published date Jan. 5, 2020 
Publisher
Japanese:公益財団法人 電気化学会 
English:The Electrochemical Society of Japan 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
File
Official URL https://www.jstage.jst.go.jp/article/electrochemistry/88/1/88_19-00048/_pdf/-char/ja
 
DOI https://doi.org/10.5796/electrochemistry.19-00048
Abstract Lithium distribution in the composite electrode of an all-solid-state lithium battery was analyzed by microbeam- particle-induced X-ray emission and gamma-ray emission techniques. Two kinds of pellet-type cells, incorporating LiCoO2 as the cathode-active material and the superionic conductor Li10GeP2S12 as the solid electrolyte, were prepared: one in the as-prepared state and the other in the charged state. Changes in the lithium distribution near the interface of the composite cathode and separator were visualized by normalizing lithium/cobalt and lithium/ germanium intensity. Lithium extraction from LiCoO2 due to charging was confirmed by the decrease in normalized intensity at the cathode composite region. The evaluation of the lithium concentration variation in the composite electrode for the all-solid-state battery during the electrochemical reactions could provide essential information for construction of a favorable composite electrode to enable preparing high-performance all-solid-state lithium batteries.

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