Ternary-salt solid polymer electrolyte for high-rate and long-life lithium metal batteries

A ternary-salt solid polymer electrolyte (TS-SPE) consisting of LiPF 6 -LiTFSI-LiFSI salts and poly(1,3-dioxolane) is created by in situ polymerization. The TS-SPE possesses high ionic conductivity, high Li + ion transference number, and stable SEI with low interfacial impedance, thereby realizing excellent rate performance and long-life stability in Li metal batteries. A ternary-salt solid polymer electrolyte consisting of LiPF 6 -LiTFSI-LiFSI salts and poly(1,3-dioxolane) was developed through an in situ polymerization for a stable Li metal anode.