Impact of Solvent Treatment of the Superionic Argyrodite Li6PS5Cl on Solid‐State Battery Performance. Issue 2 (14th January 2021)

• Record Type: Journal Article
• Authors: Ruhl, Justine; Riegger, Luise M.; Ghidiu, Michael; Zeier, Wolfgang G.
• Is Part Of: Advanced energy & sustainability research. Volume 2:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-01-14
• Subjects: organic solvents -- slurry processing -- solid electrolytes -- solid-state batteries; Renewable energy sources -- Periodicals; Environmental sciences -- Periodicals; Sustainable development -- Periodicals; 621.042
• DOI: 10.1002/aesr.202000077
• Languages: English
• ISSNs: 2699-9412

Abstract

Abstract : With growing interest in solution‐based processing of electrolytes for all‐solid‐state batteries comes the need to more deeply understand potential detrimental effects of the solvent on electrolyte materials, as well as effects on the cell performance that may not have been evident by structural characterization alone. Herein, the superionic solid electrolyte Li6 PS5 Cl is treated with five organic solvents selected for a range of different physical and chemical properties. The electrolytes treated with solvents that do not lead to obvious degradation are used in cathode composites of solid‐state batteries In/LiIn│Li6 PS5 Cl│NCM‐622:Li6 PS5 Cl. After treatment in some solvents, the solid electrolyte remains seemingly unaffected, but a strong influence on the solid‐state battery performance is observed, revealing underlying effects that warrant deeper study. Abstract : A study of the impact of various organic solvents on the argyrodite Li6 PS5 Cl reveals the detrimental influence on ionic conductivity and solid‐state battery performance—even if there are no significant changes in the crystal structure. There is a need of careful solvent selection for slurry processing and comprehensive stability tests of cathode composites in solid‐state batteries.