Interface engineering of sulfide electrolytes for all-solid-state lithium batteries

We demonstrate that a uniform the LiF (or LiI) interfacial layer at Li/Li7P3S11 interface and infiltration of HFE (or I solution) into sulfide electrolyte can suppress the Li dendrite growth. Due to the modification, the assembled Li@LiF/Li7P3S11/LiF@Li symmetrical cell can stably plating/stripping at 0.5 mA cm−2 and 0.1 mAh cm−2 at 25 °C for over 200 cycles. Coupled with the LNO-LCO cathode, the all-solid-state Li@LiF/Li7P3S11/LNO@LCO full cell exhibits a high initial reversible capacity of 118.9 mAh g−1 with excellent cycling stability and high rate performances at room temperature.289