Decoding Chemo-Mechanical Failure Mechanisms of Solid-State Lithium Metal Battery Under Low Stack Pressure via Optical Fiber Sensors.

ABSTRACT: All solid-state lithium (Li) metal batteries (ASSLBs) using ceramic-polymer hybrid solid electrolytes hold the promise for high-performance energy storage application, but they still suffer from the interfacial deterioration and dendritic Li penetration issues, particularly under low stack pressures. Therefore, understanding and mastering the underlying chemo-mechanical failure mechanisms become essential. Herein, the chemo-mechanical evolutions by operando monitoring the amplitude and heterogeneity of interfacial stress through an embedded optical fiber sensor are revealed. It is found that the uneven stripping/deposition of Li metal induces rapid and non-uniform stress growth at the interface, deteriorating interfacial contact with the Li-filament growth. Based on these insights, Li meta

SUBMITTER: Li G 

PROVIDER: S-EPMC12306395 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature