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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsEiichi Yasumoto, Akihiko Yoshida, Makoto Uchida, Junji Morita, Yasushi Sugawara, Teruhisa Kanbara
Estimating the term…
A polymer electrolyte fuel cell comprising: a hydrogen ion-conductive polymer electrolyte membrane; an anode and a cathode with the electrolyte membrane interposed therebetween; an anode-side conductive separator having a gas flow channel for supply of a fuel gas to the anode; and a cathode-side conductive separator having a gas flow channel for supply of an oxidant gas to the cathode, wherein each of the anode and the cathode comprises at least a catalyst layer in contact with the electrolyte membrane and a gas diffusion layer in contact with the catalyst layer and the separator, and at least one of the anode and the cathode contains a compound represented by the formula (I): R1—O—{(C2H4O)n—(C3H6O)m}—R2 (I) where R1 and R2 are independent of each other and each represents a hydrogen atom or an alkyl group having not less than 5 and not more than 15 carbon atoms, n and m are integers which satisfy 0≦n≦5, 0≦m≦5 and 1≦n+m≦5, and when neither n nor m is 0, at least one of the ethylene oxide group and at least one of the propylene oxide group are arranged in a random fashion.
A polymer electrolyte fuel cell comprising:
A production method of a polymer electrolyte fuel cell comprising:
Dependencies are inferred from the claim text.
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Fuel cells with solid electrolytes: characterised by membrane-electrode assemblies [MEA]
Inert electrodes with catalytic activity, e.g. for fuel cells: porous electrodes
Treatment of supports before application of the catalytic active composition: wet proofing
Methods for deposition of the catalytic active composition: coating with slurry or ink
Term end not estimated
The present invention relates to a polymer electrolyte fuel cell which directly uses a gaseous fuel such as a hydrogen gas or a liquid fuel such as methanol, ethanol or dimethyl ether and an oxidant such as air or oxygen, and particularly relates to the electrode thereof.
A typical structure of a conventional polymer electrolyte fuel cell will be described:
A fuel cell using a polymer electrolyte generates electric power and heat simultaneously by electrochemical reaction of a fuel gas containing hydrogen with an oxidant gas containing oxygen such as air.
FIG. 1 is a schematic sectional view of an MEA of a polymer electrolyte fuel cell.
FIG. 2 is a schematic sectional view of a unit cell of the polymer electrolyte fuel cell.
FIG. 3 is a pattern view of an applying apparatus for use in the present invention.
A polymer electrolyte fuel cell of the present invention comprises: a hydrogen ion-conductive polymer electrolyte membrane; an anode and a cathode with the electrolyte membrane interposed therebetween; an anode-side conductive separator having a gas flow channel for supply of a fuel gas to the anode; and a cathode-side conductive separator having a gas flow channel for supply of an oxidant gas to the cathode.
Each of the anode and the cathode comprises a catalyst layer in contact with the electrolyte membrane and a gas diffusion layer in contact with the catalyst layer and the separator.
At least one of the anode and the cathode contains an alkylene oxide compound represented by the formula (I):