Understanding and suppressing gas evolution in lithium metal batteries with ether-based electrolytes.

ABSTRACT: Understanding and suppressing gas evolution is critical to enabling high-energy-density lithium metal batteries (LMBs). Yet, comprehensive investigations in ether-based systems remain limited. Here we quantify gas generation in ether-based LMBs and elucidate the underlying mechanisms. We link CO and CO₂ production to the cathode, and CH₄ evolution to the anode. Notably, CO and CO₂ are consumed at the Li anode to form Li-containing species such as Li₂CO₃. Although CH₄ ultimately dominates the gaseous products, its evolution during cycling is delayed until a distinct onset point. We show that in a high-concentration ether electrolyte, anode activation improves Li deposition morphology and suppresses interfacial reactions, exte

SUBMITTER: Hung ST 

PROVIDER: S-EPMC13623640 | biostudies-literature | 2026 Oct

REPOSITORIES: biostudies-literature