Preparation and characterization of new microporous stretched membrane for lithium rechargeable battery

摘要: Abstract The microporous membrane based on poly(vinylidene fluoride) (PVdF) is prepared with phase inversion method. In addition to process, solvent pre-evaporation and uni-axial stretching processes were introduced enhance tensile strength ionic conductivity of the membrane. after 200% was about 52 MPa, which four times higher than that without stretching. soaked liquid electrolyte also increased from 6.1 × 10 −5 8.6 × 10 −4  S cm −1 at room temperature by taking process.