Phase-Transformation Wave Dynamics in LiFePO4
A general continuum model has recently been proposed for the dynamics of ion intercalation in a single crystal of rechargeable-battery electrode materials . When applied to strongly phase-separating, highly anisotropic materials such as LiFePO4, phase-transformation waves are predicted between the lithiated and unlithiated portions of a crystal. In this paper, we extend the analysis of the wave dynamics, and we describe a new mechanism for current capacity fade through the interactions of these waves with defects in the material.
Veena Tikare, Graeme E. Murch, Frédéric Soisson and Jeung Ku Kang
D. Burch et al., "Phase-Transformation Wave Dynamics in LiFePO4 ", Solid State Phenomena, Vol. 139, pp. 95-100, 2008