Non-corrosive asymmetric fluorinated aryl sulfonimide lithium salt for high-temperature and high-voltage lithium metal batteries

passivation layer on the surface of Al current collector. In addition, LiFAS could also promote the formation of inorganic-rich interphases on the cathode and anode. The unique advantages of LiFAS endow Li||NCM811 full cells great cycling stability and capacity retention at harsh cycling conditions (81% after 230 cycles at 60 °C and 4.5 V, 0.5 C charge/1 C discharge). This work inspires molecular engineering strategy for designing functional lithium salts to enhance the cycle life of LMBs under high-temperatures and high-voltages.