Polymer electrolyte membrane production method, polymer electrolyte membrane produced using same, membrane electrode assembly comprising said polymer electrolyte membrane, and fuel cell comprising said membrane electrode assembly

摘要

The present specification provides a method for preparing a polymer electrolyte membrane including reducing a ketone group of a polyarylene ether ketone polymer of a polymer electrolyte membrane; and treating the polymer electrolyte membrane with sulfuric acid, a polymer electrolyte membrane prepared using the same, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.