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US 7,803,495 B2Granted
Polymer electrolyte membrane for fuel cell, method for preparing the same, and fuel cell system comprising the same
AssigneeSamsung SDI Co., Ltd.
InventorsMyoung-Ki Min, Hye-A Kim, Ho-Jin Kweon
Life of this patent
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Abstract
The polymer electrolyte membrane for a fuel cell comprises a hygroscopic substrate and a proton conductive polymer disposed at the inside, one side, and/or both sides of the hygroscopic substrate.
Claims14
A polymer electrolyte membrane for a fuel cell, comprising:
- a hygroscopic substrate comprising at least one hydrophilic compound selected from the group consisting of sodium salts of alkynic acids, and combinations thereof;
- and
- a proton conductive polymer disposed at one or more of the inside, one side, and both sides of the hygroscopic substrate.
A polymer electrolyte membrane for a fuel cell, comprising:
- a hygroscopic substrate comprising at least one hydrophilic compound and a hygroscopic agent comprising an inorganic oxide selected from the group consisting of zeolite, inorganic silicate, TiO2, SiO2, RuO2, and combinations thereof;
- a proton conductive polymer disposed at the inside, and coated on a first side of the hygroscopic substrate;
- and
- electroconductive nano particles selected from the group consisting of nano metal particles and nano carbon particles coated on a second side of the hygroscopic substrate.
1 more element
A fuel cell system comprising:
- an electricity generating element comprising:
- a membrane-electrode assembly which comprises a polymer electrolyte membrane including a hygroscopic substrate comprising at least one hydrophilic compound selected from the group consisting of sodium salts of alkynic acids, and combinations thereof, and a proton conductive polymer disposed at least one of the inside, one side, and both sides of the hygroscopic substrate, a cathode disposed on one side of the polymer electrolyte membrane, and an anode disposed on the other side of the polymer electrolyte membrane, and
- separators disposed to contact the cathode and anode of the membrane-electrode assembly, respectively;
- a fuel supplier;
- and
- an oxidant supplier.
3 more elements
Dependencies are inferred from the claim text.