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Development of Electrolytes for All-Solid-State Lithium Batteries to Increase the Cruising Range of Electric Vehicles

電気自動車の航続距離増加につながる全固体リチウム電池用電解質の開発

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Price
Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
Publication code
20214409
Paper/Info type
Journal of Society of Automotive Engineers of Japan

Vol.75 No.6

Pages
88-91(Total 4 p)
Date of publication
Jun 2021
Publisher
JSAE
Language
Japanese

Detailed Information

Category(J)ホットトピックス

Translation

Category(E)Hot Topics
Author(J)1) 谷端 直人, 2) 中山 将伸
Author(E)1) Naoto Tanibata, 2) Masanobu Nakayama
Affiliation(J)1) 名古屋工業大学, 2) 名古屋工業大学
Abstract(J)Liイオン電池の高エネルギー密度化が期待できるLi金属電極はデンドライトによる短絡の問題を有する。本研究では計算化学により高成形が期待されたLiAlCl4電解質に注目した。メカノケミカル合成した試料の圧粉体は高い相対密度を示し、従来の酸化物電解質より一桁以上イオン伝導性と優れた短絡抑制能を示した。

Translation

Abstract(E)Dense electrolytes in all-solid-state batteries are expected to suppress Li dendrite phenomena that prevent the application of high-energy-density Li metal electrodes. This study aimed to investigate solid electrolytes with high formability in which green compacts can prevent Li dendrites. LiAlCl4 was focused on, owing to the formability suggested by the first principles calculations. Mechanochemically synthesized LiAlCl4 green compacts exhibit one order of magnitude higher conductivity than a conventional oxide electrolyte. The dense LiAlCl4 green compacts show large necking contributed minimal grain-boundary resistance to the total resistance. Li metal symmetric cells using the LiAlCl4 pellet showed good cycle performance without short-circuiting.

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