▎ 摘　　要

NOVELTY - Polymer electrolyte membrane comprises polymer matrix including sulfonated polymer, and antioxidant compound-bound graphene oxide disposed within the polymer matrix. USE - The membrane is useful as separator for blocking gas reactants and electrons of fuel cell. ADVANTAGE - The membrane transfers hydrogen ions generated through chemical reaction, provides electrical energy through chemical reaction between hydrogen and oxygen to environmentally friendly energy sources i.e. fuel cell, and has excellent physical properties, and improved oxidation stability and mechanical stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing polymer electrolyte membrane, comprising (a) forming sulfonated polymer, (b) forming antioxidant compound-bound graphene oxide, (c) dissolving the sulfonated polymer and the antioxidative compound-bound graphene oxide in organic solvent and mixing, and (d) removing the organic solvent to precipitate polymer electrolyte membrane.