Fig. 2: Comparison of thermal runaway features of Gr|NMC batteries with concentrated LiFSI/DMC and conventional 1 M LiPF6/EC:EMC electrolytes.
From: Thermal runaway of Lithium-ion batteries employing LiN(SO2F)2-based concentrated electrolytes
a Gr|NMC811 battery with the concentrated LiFSI/DMC electrolyte. The inset shows the combustibility of battery in the lateral heating test. b Gr|NMC811 battery with the conventional 1 M electrolyte. c Gr|NMC532 battery with the concentrated LiFSI/DMC electrolyte. d Gr|NMC532 battery with the conventional 1 M electrolyte. dT/dt-T curves of Gr|NMC811 and Gr|NMC532 batteries based on the ARC test, were plotted in logarithmic coordinates. T1 was defined as the onset temperature of self-heating, which results from the onset of the chain reactions inside the battery, leads to a spontaneous and continuous rise in temperature if the battery is kept under a poor heat dissipation condition or an almost adiabatic condition. T2 was defined as the trigger temperature of thermal runaway preset at the dT/dt of 1 °C s−1. T3 was defined as the maximum temperature during the thermal runaway, which is a key parameter in the evaluation of the destructiveness of thermal runaway.
