The volumetric heat capacity for the wetted positive electrode and wetted negative electrode are 3335500 J m -3 K -1 and 1743680 J m -3 K -1 . Then the gravimetric heat capacity of the wetted electrodes is calculated by dividing the averaged volumetric heat capacity (calculated above) by the averaged density of the saturated electrodes (3700 kg m -3 and 2060 kg m -3 for positive and negative electrode). This provides a gravimetric heat capacity of 900 J kg -1 K -1 and 845 J kg -1 K -1 for the wetted positive electrode and negative electrode (without the current collectors) at 25 °C. As the specific heat capacity of the dry electrode bulk (powder) varies with temperature, this dependency can be included for the wetted electrode: