Polymer electrolyte membrane for fuel cell, membrane electrode assembly and fuel cell including the same

摘要

Disclosed are a polymer electrolyte membrane for fuel cells and a membrane electrode assembly and fuel cell including the same. The polymer electrolyte membrane includes a fluorine-based cation exchange resin having proton conductivity and fibrous nanoparticles having a hydrophilic group. By using the fluorine-based cation exchange resin having proton conductivity and the fibrous nanoparticles having a hydrophilic group in combination, performance of a fuel cell including the polymer electrolyte membrane is not deteriorated and the polymer electrolyte membrane prevents gases from permeating thereinto and has enhanced durability for extended use. A fuel cell including the above-described polymer electrolyte membrane is provided.

主权项

1. A polymer electrolyte membrane for fuel cells, comprising a fluorine-based cation exchange resin having proton conductivity and fibrous nanoparticles having a hydrophilic group,
wherein the fibrous nanoparticles have a hydrophilic group, have a diameter of 10 to 200 nm and a length of 1 to 20 μm, and have an aspect ratio of 1:5 to 1:2,000, and wherein the fibrous nanoparticles having the hydrophilic group are cellulose-based nanofibers.