Design Strategies of Li-Si Alloy Anode for Mitigating Chemo-Mechanical Degradation in Sulfide-Based All-Solid-State Batteries.

ABSTRACT: Composite anodes of Li₃ PS₄  glass+Li-Si alloy (Type 1) and Li₃ N+LiF+Li-Si alloy (Type 2) are prepared for all-solid-state batteries with Li₃ PS₄ (LPS) glass electrolyte and sulfur/LPS glass/carbon composite cathode. Using a three-electrode system, the anode and cathode potentials are separated, and their polarization resistances are individually traced. Even under high-cutoff-voltage conditions (3.7 V), Type 1 and 2 cells are stably cycled without voltage noise for >200 cycles. Although cathode polarization resistance drastically increases after 3.7 V charge owing to LPS oxidation, LPS redox behavior is fairly reversible upon discharge-charge unlike the non-composite alloy anode cell. Time-of-flight secondary ion mass spectrometry an

SUBMITTER: Kim M 

PROVIDER: S-EPMC10460900 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature