Three-Dimensional Finite Element Study on Lithium Diffusion and Intercalation-Induced Stress in Polycrystalline LiCoO2 Using Anisotropic Material Properties

Abstract

In current study, Lithium (Li) intercalation-induced stress of LiCoO2 with anisotropic properties using three-dimensional microstructures has been studied systematically. Phase field method was employed to generate LiCoO2 polycrystals with varying grain sizes. Li diffusion and stresses inside the polycrystalline microstructure with different grain size, grain orientation, and 2 (L. Wu, et al., J. Power Sources 299 (2015) 57). This work demonstrates the importance to include anisotropic property in the model.