The negative electrode likely limits the maximum power observed by the cell, as observed from the lower diffusion coefficient and current exchange density compared to the positive electrode over the full SOC window. At stoichiometries of LixC6, where x=0.45 and 0.85 activation energies of up to 60 kJK -1 and low diffusion coefficients of 5 x 10 -13 cm -2 s -1 at 25 °C were observed. Some of these limitations may be compensated for at 45 °C as the exchange current in the negative electrode surpasses that of the positive electrode and the diffusion coefficient increases in the negative by an order of magnitude to 2 x10 -12 cm -2 s -1 . Whereas for the positive electrode the lowest diffusion coefficients were observed for LixMO2, at x=0.32 and 0.81, which are just within the full cell cycling window (0.26≤x≤91), 7 x10 -12 cm -2 s -1 was obtained at room temperature which increased to 2 x 10 -11 at 45 o C, above stoichiometry of x=0.8 the activation energy also doubled to 24 kJK -1 . The changes in temperature change the ionic transport by orders of magnitude and the reaction rates increase.