Improved electrochemical and mechanical performance of epoxy-based electrolytes doped with mesoporous TiO2

As a potential electrolyte for energy storage devices, mesoporous TiO 2 -doped epoxy-based composite electrolytes were fabricated. The presence of mesoporous TiO 2 in the composites promotes the cross-linking reaction of epoxy resin , as well as reduces the charge transfer resistance and favors the ionic transport, providing the composite electrolytes with enhanced electrochemical performance , mechanical strength and thermal stability. The highest ionic conductivity (11 × 10 −5  S cm −1 ), ionic transference number (0.661) and compression strength (5.06 MPa) were obtained for a composite electrolyte with 6 wt% doped mesoporous TiO 2 . The nano-structured reinforcing phase is beneficial to the enhancement in the electrochemical and mechanical performances of electrolyte simultaneously.