Multiscale dynamics of charging and plating in graphite electrodes coupling operando microscopy and phase-field modelling.

ABSTRACT: The phase separation dynamics in graphitic anodes significantly affects lithium plating propensity, which is the major degradation mechanism that impairs the safety and fast charge capabilities of automotive lithium-ion batteries. In this study, we present comprehensive investigation employing operando high-resolution optical microscopy combined with non-equilibrium thermodynamics implemented in a multi-dimensional (1D+1D to 3D) phase-field modeling framework to reveal the rate-dependent spatial dynamics of phase separation and plating in graphite electrodes. Here we visualize and provide mechanistic understanding of the multistage phase separation, plating, inter/intra-particle lithium exchange and plated lithium back-intercalation phenomena. A strong dependence of intra-particle lithiati

SUBMITTER: Lu X 

PROVIDER: S-EPMC10449918 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature