Multifunctional Additives to Realize Dendrite‐Free Lithium Deposition in Carbonate Electrolytes toward Low‐Temperature Li Metal Batteries

Abstract Li metal is recognized as one of the most promising anode candidates for next‐generation high specific energy batteries. However, the fragile solid electrolyte interface (SEI) and heterogeneous Li plating/stripping in carbonate electrolyte severely encumber its practical application. Here, the heptafluorobutyramide (HFT) and lithium nitrate (LiNO 3 ) are proposed to synergistically construct a robust SEI layer with excellent Li + transport kinetics. The HFT can promote the dissolution of LiNO 3 in carbonate electrolyte due to the strong cooperation. The results of theoretical calculations, in situ Raman and X‐ray photoelectron spectroscopy with deep Ar‐ion etching demonstrate that HFT and NO 3 − will…

• NN
  National Natural Science Foundation of China

  Awards: 22179080, 22379091