High temperature <i>in situ</i> gas analysis for identifying degradation mechanisms of lithium-ion batteries.

ABSTRACT: The primary safety concern associated with lithium-ion batteries is the risk of thermal runaway. The components of the cells can react under heat release when exposed to external or internal heat sources, potentially leading to large-scale fires and explosions. This process is initiated by the decomposition and/or reformation of the Solid Electrolyte Interphase (SEI) and electrolyte; the precise underlying reaction network remains unclear due to insufficient availability of in situ chemical analysis methods during thermal abuse. Herein, we present a method based on high-temperature feasible online electrochemical mass spectrometry that is used to investigate these mechanisms and propose a reaction network of SEI formation and degradation. For a graphite/NMC cell with ethylene carbon

SUBMITTER: Schmidt L 

PROVIDER: S-EPMC11834935 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature