Functionalized Sulfide Solid Electrolyte with Air-Stable and Chemical-Resistant Oxysulfide Nanolayer for All-Solid-State Batteries.

ABSTRACT: Sulfide solid electrolytes (SEs) with high Li-ion conductivities (σ_ion) and soft mechanical properties have limited applications in wet casting processes for commercial all-solid-state batteries (ASSBs) because of their inherent atmospheric and chemical instabilities. In this study, we fabricated sulfide SEs with a novel core-shell structure via environmental mechanical alloying, while providing sufficient control of the partial pressure of oxygen. This powder possesses notable atmospheric stability and chemical resistance because it is covered with a stable oxysulfide nanolayer that prevents deterioration of the bulk region. The core-shell SEs showed a σ_ion of more than 2.50 mS cm^-1 after air exposure (for 30 min) and reaction with slurry chemicals (mixing

SUBMITTER: Jung WD 

PROVIDER: S-EPMC7558032 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature