Fig. 2: Safety enhancement of HC||NFM SIBs by smart in situ PCIE.
From: Smart gel polymer electrolytes enlightening high safety and long life sodium ion batteries
a The time-temperature curve and self-heating rate (SHR) curve during ARC measurements of 1 Ah level pouch type HC||NFM SIBs (100% SOC) (Inset is the self-heating rate (SHR) curve. b Ttr and Tonset of different electrodes and electrolytes during the ARC measurements. c Temperature-pressure curves during the ARC test of 100% SOC NFM positive electrodes (fully desodiated NFM positive electrode). Pncg and Pmax represent the non-condensable gas pressure and the maximum pressure, respectively. d DSC curves of 100% SOC NFM positive electrodes. e In situ heating XRD for 100% SOC NFM positive electrode. f Voltage curves of the coin cells cycled at 24.0 mA g−1 for 5 cycles at 30 °C, followed by a temperature elevation to 120 °C (1.0–4.0 V) and g impedance variations of HC||NFM SIBs before and after heating at 120 °C for 10 min.
