Mechanochemical Synthesis and Electrochemical Properties of Li x VS y Positive Electrodes for All-Solid-State Batteries

Autor: Misae Otoyama, Tomonari Takeuchi, Noboru Taguchi, Kentaro Kuratani, Hikari Sakaebe
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: ECS Advances, Vol 2, Iss 1, p 010501 (2023)
Druh dokumentu: article
ISSN: 2754-2734
DOI: 10.1149/2754-2734/acb224
Popis: To enhance the energy density of all-solid-state batteries, polysulfide positive electrodes have a great advantage of their high capacity. In this study, we developed Li _x VS _y ( x = 5–9, y = 4–6) comprised Li _2 S and LiVS _2 . Although Li _2 S is an insulator, Li _x VS _y shows a high electronic conductivity (∼10 ^−1 –10 ^−2 S cm ^−1 ) because it contains LiVS _2 with a high electronic conductivity. The theoretical capacity of Li _x VS _y is 626–789 mAh g ^−1 when all the Li in Li _x VS _y reacts. Li _x VS _y positive electrodes achieve a high energy density because they show high capacity with no conductive additives and high loading of Li _x VS _y .
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