Stress-Strain Engineering with Lithium Solid Solution/Lithium Alloy Composite Anodes for Stable Lithium-Metal Batteries.

ABSTRACT: High-performance thin lithium (Li) metal anodes are indispensable for high-energy-density Li metal batteries, yet their electrochemical-mechanical instability precipitates rapid failure. Uncontrolled lithium plating, accompanied by severe side reactions and the formation of a porous, non-compact deposit, swells the electrode and generates destructive stress. An in situ investigation of stress, strain, and their spatial distributions during charge/discharge cycling identifies the coupled volume variation and stress-strain evolution as an operando descriptor of degradation and underpins the rational design of a dual-phase Li-Ag solid-solution/Li₂₂Sn₅ alloy composite anode. Ag in Li-Ag solid solution enhances the affinity with Li⁺ for uniform Li plating, where

SUBMITTER: Fu J 

PROVIDER: S-EPMC12697796 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature