LISICON-Based Amorphous Oxide for Bulk-Type All-Solid-State Lithium-Ion Battery

The use of oxide electrolytes promises the safety of Li-ion batteries but complicates the fabrication of electrochemical interfaces. Herein, we report the facile preparation of ionic-transferable interfaces between the electrode and electrolyte in oxide-based bulk-type all-solid-state lithium-ion ba...

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Bibliographic Details
Published in:ACS applied energy materials 2020-04, Vol.3 (4), p.3220-3229
Main Authors: Okumura, Toyoki, Taminato, Sou, Miyazaki, Yoshinobu, Kitamura, Michinori, Saito, Tomohiro, Takeuchi, Tomonari, Kobayashi, Hironori
Format: Article
Language:English
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Summary:The use of oxide electrolytes promises the safety of Li-ion batteries but complicates the fabrication of electrochemical interfaces. Herein, we report the facile preparation of ionic-transferable interfaces between the electrode and electrolyte in oxide-based bulk-type all-solid-state lithium-ion batteries (ASS-LIBs) owing to the deformability of the LISICON–Li3BO3 amorphous oxide, which cannot be realized with currently popular crystalline oxide electrolytes. The amorphous oxide was used to assemble an ASS-LIB even without firing. Moreover, low-temperature heat treatment with a spark-plasma sintering process effectively enhanced the charge–discharge performance of the ASS-LIB: the amorphous oxide was further densified until colorless, and re-formation of a nanosized LISICON crystalline phase in the oxide–electrolyte matrix occurred. The interfacial formability provided by the LISICON–Li3BO3 amorphous oxide is an effective route for the successful design of bulk-type oxide-based ASS-LIBs.
ISSN:2574-0962
2574-0962
DOI:10.1021/acsaem.9b01949