Preparation and Performance of Porous Polymer Electrolytes Doped with Nano-Al₂O₃

Abstract

Porous polymer electrolytes (PPEs) doped with nano-Al2O3 were prepared by a joint application of ultrasonic treatment and control evaporation in vacuum oven. The morphology, pore size distribution, thermal, electrochemical and mechanical properties of the PPEs were investigated. The porosity distribution of PPEs was uniform and their pore size was relatively modest. The total resistance (Rt) of PPEs with 10% Al2O3 is only 9 Ω at 80 °C. The maximum tensile strength of the PPEs membranes reached to 24.43 MPa. The results show that nano-Al2O3 can improve the comprehensive performance of PPEs without compromising their conductivity and diplayed the good application prospects of Al2O3-modified PPEs for lithium-ion batteries.

Lithium acetate modified PU/graphene composites as separator for advanced Li‐ion batteries

“…Undoubtedly, the electrochemical properties of the LIBs were mainly determined by the electrode materials [7][8][9]. However, battery separator plays a key role by protecting LIBs from short circuit and overcharge [10][11][12][13][14][15][16][17][18]. A good separator should meet the requirements of suitable thickness, high thermal stability, and high Li + ion transmission rate [19,20].…”