Quantifying redox heterogeneity in single-crystalline LiCoO₂ cathode particles.

ABSTRACT: Active cathode particles are fundamental architectural units for the composite electrode of Li-ion batteries. The microstructure of the particles has a profound impact on their behavior and, consequently, on the cell-level electrochemical performance. LiCoO₂ (LCO, a dominant cathode material) is often in the form of well-shaped particles, a few micrometres in size, with good crystallinity. In contrast to secondary particles (an agglomeration of many fine primary grains), which are the other common form of battery particles populated with structural and chemical defects, it is often anticipated that good particle crystallinity leads to superior mechanical robustness and suppressed charge heterogeneity. Yet, sub-particle level charge inhomogeneity in LCO particles has been widely

SUBMITTER: Wei C 

PROVIDER: S-EPMC7285691 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature