A mathematical model for diffusion-induced stress generation in spherical Li-ion active materials has been incorporated into Dualfoil, a Li-ion cell-sandwich model with porous electrodes. The model is used to examine differences in the electrochemomechanical response of “power” vs “energy” cells at high currents. Porous electrode effects, particularly in “energy-type” cells with thick electrodes, amplify the peak stresses encountered during lithium insertion a...