Precursor-based surface modification of cathodes using Ta and W for sulfide-based all-solid-state batteries.

ABSTRACT: Sulfide ionic conductors are promising candidates as solid electrolytes for all-solid-state batteries due to their high conductivity. However, interfacial instability between cathodes and sulfide electrolytes still remains a challenge because sulfides are highly reactive. To suppress undesirable side reactions at the cathode/sulfide electrolyte interface, the surface of the cathode has been modified using stable coating materials. Herein, a precursor based (PB) surface modification using Ta and W is introduced as an effective approach for the formation of a suitable cathode coating layer. Through heat-treatment of the PB surface modification, the source materials (Ta or W) coated on the precursors diffused into the cathode and acted as a dopant. Formation of the surface coating layer was c

SUBMITTER: Lim CB 

PROVIDER: S-EPMC7324361 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature