Finite element models of a three-dimensional, porous cathode were constructed and analyzed by the COMSOL multiphysics package version 3.2 . Four types of cathode active material particles, arranged in both regular and random arrays, were modeled. Experimental studies of Li/PEO-LiClO4/Li1+xMn2O4 where 0 x 1 were used to validate simulation results. Two parameters, Li ion diffusivity into Li1+xMn...