Solvation‐Tailored PVDF‐Based Solid‐State Electrolyte for High‐Voltage Lithium Metal Batteries

Abstract Poly(vinylidene fluoride) (PVDF)‐based polymer electro‐lytes are attracting increasing attention for high‐voltage solid‐state lithium metal batteries because of their high room temperature ionic conductivity, adequate mechanical strength and good thermal stability. However, the presence of highly reactive residual solvents, such as N, N‐dimethylformamide (DMF), severely jeopardizes the long‐term cycling stability. Herein, we propose a solvation‐tailoring strategy to confine residual solvent molecules by introducing low‐cost 3 Å zeolite molecular sieves as fillers. The strong interaction between DMF and the molecular sieve weakens the ability of DMF to participate in the solvation of Li + , leading to…

• NN
  National Natural Science Foundation of China

  Award: No.22239002, No. 92372201
• NK
  National Key Research and Development Program of China

  Award: 2021YFB3800300