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High‐energy‐density Li metal batteries (LMBs) with Nickel (Ni)‐rich cathode and Li‐metal anode have attracted extensive attention in recent years. However, commercial carbonate electrolytes bring severe challenges including poor cycling stability, severe Li dendrite growth and cathode cracks, and narrow operating temperature window, especially hardly work at below −40 °C. In this work, a 2.4 m lithium...
Nex‐generation high‐energy‐density storage battery, assembled with lithium (Li)‐metal anode and nickel‐rich cathode, puts forward urgent demand for advanced electrolytes that simultaneously possess high security, wide electrochemical window, and good compatibility with electrode materials. Herein an intrinsically nonflammable electrolyte is designed by using 1 M lithium difluoro(oxalato)borate (LiDFOB)...