LiFePO4 paper appears on ACS Energy Letters

A work led by Fan and Kaiqi was just published on ACS Energy Letters. In the paper, we report the observation of non-uniform and filament-like FePO4 domains on LiFePO4 secondary particles that persist during charging and discharging — not good news for battery rate performance and stability. The interesting reaction behavior was shown by phase-field modeling to result from misfit stress between individual primary particles in the LiFePO4 aggregates. It suggests stress reduction is potentially important for improving the reaction uniformity in the secondary particles of LiFePO4 and possibly other electrode materials.

Paper: https://pubs.acs.org/doi/abs/10.1021/acsenergylett.2c00226

News story: https://news.rice.edu/news/2022/lithiums-narrow-paths-limit-batteries