Dual‐Salt Electrolyte Additives Enabled Stable Lithium Metal Anode/Lithium–Manganese‐Rich Cathode Batteries

Although lithium (Li) metal anode/lithium–manganese-rich (LMR) cathode batteries have an ultrahigh energy density, the highly active Li and structural deterioration of LMR can make usage these difficult. Herein, a multifunctional electrolyte containing LiBF4 LiFSI dual-salt additives is designed, which enables superior cyclability Li/LMR cells with capacity retentions ≈83.4%, 80.4%, 76.6% after 400 cycles at 0.5, 1, 2 C, respectively. The form thin, uniform, inorganic species-rich solid interphase (SEI) (CEI). In addition, it alleviates bulk corrosion enhances sustainability cathode. Moreover, design strategy provides insights to develop other high-voltage (HVLMBs) enhance cycle stability.