Impedance measurements were performed over a temperature range of 20 to 80 °C, with incremental steps of 5 °C. These measurements were conducted using a TSC battery cell from rhd instruments GmbH & Co, coupled with a NEISYS electrochemical impedance analyzer from Novocontrol Technologies, applying an AC signal of 10 mV over a frequency range of 1 MHz to 0.1 Hz. Data analysis was carried out using RelaxIS software from rhd instruments, Germany.