Lithium-Metal Anode Instability of the Superionic Halide Solid Electrolytes and the Implications for Solid-State Batteries.

ABSTRACT: Owing to high ionic conductivity and good oxidation stability, halide-based solid electrolytes regain interest for application in solid-state batteries. While stability at the cathode interface seems to be given, the stability against the lithium metal anode has not been explored yet. Herein, the formation of a reaction layer between Li₃ InCl₆ (Li₃ YCl₆ ) and lithium is studied by sputter deposition of lithium metal and subsequent in situ X-ray photoelectron spectroscopy as well as by impedance spectroscopy. The interface is thermodynamically unstable and results in a continuously growing interphase resistance. Additionally, the interface between Li₃ InCl₆ and Li₆ PS₅ Cl is characterized by impedance sp

SUBMITTER: Riegger LM 

PROVIDER: S-EPMC7986170 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature