Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 105, Issue 12, Pages 7751-7759Publisher
WILEY
DOI: 10.1111/jace.18704
Keywords
air stability; amorphous structure; chalcogenide glass; high conductivity
Categories
Funding
- National Natural Science Foundation of China [51972176]
- K. C. Wong Magna Fund at Ningbo University
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A high-conductivity Li3PS4-xLiBr glass solid electrolyte was obtained through a simple synthetic route, and the air stability was improved by doping with Br- ions.
An amorphous superionic conductor is a promising solid electrolyte (SE) with excellent ionic conductivity and high energy density, which would be promising candidates for all-solid-state lithium-ion batteries. However, these advantageous features alone are difficult to achieve large-scale practical applications. Having a simple, effective synthetic route and good air stability is also critically important for SEs. Here, Li3PS4-xLiBr glass SE with high conductivity was obtained by simple mechanical milling and subsequent short-term low-temperature treatment. The site disorder between S2- and Br- anions facilitates ionic transport. Our comparison of air stability before and after doping with halogen revealed that Br- doping well reduced the production of H2S gas and improved the air stability of the SE.
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