Anisotropic crystallite size distributions in LiFePO₄ powders.

ABSTRACT: The anisotropic crystallite sizes in high-performance LiFePO₄ powders were measured by XRD and compared with the particle sizes found by TEM image analysis. Lognormal particle size distribution functions were determined for all three main crystallographic axes. A procedure was developed to determine the fraction of the composite particles which consists of several crystallites and contains small- and large-angle boundaries. In a sample with the most anisotropic crystallites (ratio of volume-weighted mean crystallite sizes L̄ _V[001]/L̄ _V[010] = 1.41) the number of the composite particles was at least 30%.

SUBMITTER: Bobyl A 

PROVIDER: S-EPMC8697584 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature