Enhanced electrochemical and mechanical properties of P(VDF-HFP)-based composite polymer electrolytes with SiO2 nanowires

► Composite polymer electrolytes are prepared by adding SiO2 nanowires as 1-dimensional nanofiller into P(VDF-HFP). ► The composite polymer membrane can tolerate a maximal stress of 27.8 MPa. ► The ionic conductivity of the electrolyte is up to 1.08 × 10−3 S cm−1, the electrochemical window is 4.8 V. ► SiO2 nanowires are a new way to improve electrochemical and mechanical performance in lithium ion batteries.