The specific heat capacity describes the heat energy required to raise a material by a unit of energy, this relates to how easily the temperature rises within a cell and helps the model to predict temperature gradients. Selection of materials with a high specific heat capacity means more energy is needed to raise the internal temperature of a cell reducing the presence of internal gradients. This property was measured for the delaminated electrode powders and the separator as it is not dependent on microstructure (Figure ). The values for the black masses provide an aggregate heat capacity for the active material, binder, and carbon black.