Polymer electrolyte membrane for fuel cell, membrane electrode assembly and fuel cell including the same
First Claim
1. A polymer electrolyte membrane for fuel cells comprising:
- a hydrocarbon-based cation exchange resin having hydrogen ion conductivity; and
fibrous nanoparticles having a hydrophilic group,wherein a mix ratio of the hydrocarbon-based cation exchange resin having hydrogen ion conductivity and the fibrous nanoparticles having a hydrophilic group is 99.9;
0.1 to 91;
9 on a weight ratio basis,wherein the fibrous nanoparticles having a hydrophilic group is cellulose nanofibers, wherein the fibrous nanoparticles having a hydrophilic group has a diameter of 1 to 200 nm and a length of 1 to 20 μ
m and an aspect ratio of 1;
5 to 1;
2,000,wherein the hydrophilic group is a hydroxyl group (-OH) and is present in an amount of 5 to 90% in the cellulose nanofibers, with respect to the total sites of the hydroxyl group (-OH), andwherein the hydrocarbon-based cation exchange resin is one or more selected from the group consisting of benzimidazole polymers, polyimide polymers, polyetherimide polymers, polyphenylene sulfide polymers, polysulfone polymers, polyether sulfone polymers, polyether ketone polymers, polyether ether ketone polymers and polyphenyl quinoxaline polymers.
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Accused Products
Abstract
Provided are a polymer electrolyte membrane for fuel cells, and a membrane electrode assembly and a fuel cell including the same. More specifically, provided is a polymer electrolyte membrane for fuel cells including a hydrocarbon-based cation exchange resin having hydrogen ion conductivity and fibrous nanoparticles having a hydrophilic group. By using the fibrous nanoparticles having a hydrophilic group in conjunction with the hydrocarbon-based cation exchange resin having hydrogen ion conductivity, it is possible to obtain a polymer electrolyte membrane for fuel cells that exhibits improved gas barrier properties and long-term resistance, without causing deterioration in performance of fuel cells, and a fuel cell including the polymer electrolyte membrane.
14 Citations
7 Claims
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1. A polymer electrolyte membrane for fuel cells comprising:
-
a hydrocarbon-based cation exchange resin having hydrogen ion conductivity; and fibrous nanoparticles having a hydrophilic group, wherein a mix ratio of the hydrocarbon-based cation exchange resin having hydrogen ion conductivity and the fibrous nanoparticles having a hydrophilic group is 99.9;
0.1 to 91;
9 on a weight ratio basis,wherein the fibrous nanoparticles having a hydrophilic group is cellulose nanofibers, wherein the fibrous nanoparticles having a hydrophilic group has a diameter of 1 to 200 nm and a length of 1 to 20 μ
m and an aspect ratio of 1;
5 to 1;
2,000,wherein the hydrophilic group is a hydroxyl group (-OH) and is present in an amount of 5 to 90% in the cellulose nanofibers, with respect to the total sites of the hydroxyl group (-OH), and wherein the hydrocarbon-based cation exchange resin is one or more selected from the group consisting of benzimidazole polymers, polyimide polymers, polyetherimide polymers, polyphenylene sulfide polymers, polysulfone polymers, polyether sulfone polymers, polyether ketone polymers, polyether ether ketone polymers and polyphenyl quinoxaline polymers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification