Improving the Stability of Lithium Aluminum Germanium Phosphate with Lithium Metal by Interface Engineering.

ABSTRACT: Lithium aluminum germanium phosphate (LAGP) solid electrolyte is receiving increasing attention due to its high ionic conductivity and low air sensitivity. However, the poor interface compatibility between lithium (Li) metal and LAGP remains the main challenge in developing all-solid-state lithium batteries (ASSLB) with a long cycle life. Herein, this work introduces a thin aluminum oxide (Al₂O₃) film on the surface of the LAGP pellet as a physical barrier to Li/LAGP interface by the atomic layer deposition technique. It is found that this layer induces the formation of stable solid electrolyte interphase, which significantly improves the structural and electrochemical stability of LAGP toward metallic Li. As a result, the optimized symmetrical cell exhibits a long li

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC9182743 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature