▎ 摘　　要

NOVELTY - An organic-inorganic composite proton exchange membrane comprises 92.5-97.5 wt.% nano-sheet filler with an alkaline functional group surface sulfonated polyaryl polymer, and 2-7.5 wt.% nanosheet filler with basic functional groups on the surface. USE - The organic-inorganic composite proton exchange membrane is used for fuel cell used as electrochemical device for converting chemical energy into electric energy. ADVANTAGE - The organic-inorganic composite proton exchange membrane has excellent proton conductivity, methanol barrier property and battery performance. The raw material cost is low, the preparation technique is easy to control, and it is suitable for mass production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing the proton exchange membrane.