Polymer electrolyte membrane, manufacturing method therefor, and electrochemical device comprising same

A method for manufacturing a polymer electrolyte membrane, the method comprising:

• preparing a mixed solution comprising an ion conductor having an ion exchange group, and an organic compound;
• and
• forming a polymer electrolyte membrane using the mixed solution,
• wherein the organic compound has a functional group capable of binding to the ion exchange group through an ionic bond or a hydrogen bond to form an ionic crosslink structure or a hydrogen-bond crosslink structure with the ion conductor, and
• wherein the organic compound is substituted or unsubstituted benzenedicarboxylic acid, substituted or unsubstituted aminophenol, substituted or unsubstituted phenylenediamine, substituted or unsubstituted bipyridine diamine, substituted or unsubstituted di(aminophenyl)amine, substituted or unsubstituted bipyrrole, substituted or unsubstituted salsalate, or a mixture of two or more thereof.