Title:
SOLID POLYMER ELECTROLYTE TYPE FUEL CELL
Document Type and Number:
Japanese Patent JP3035079
Kind Code:
B2
Abstract:
PURPOSE: To make an electrolyte layer thin after a fuel cell is formed and improve the performance of the electrolyte type fuel cell by coating and impregnating an electrolyte liquid dispersed and mixed with solid acid grains carrying the sulfuric acid group on the insulator of an inorganic material on the surface of an electrode.
CONSTITUTION: Hydrophilic reaction layers 2 made of hydrophilic and hydrophobic carbon black and polyethylene tetrafluoride and hydrophobic gas diffusion layers 3 made of hydrophobic carbon black and polyethylene tetrafluoride are laminated, pressed, and sintered, platinum acid chloride is coated on the surfaces of the reaction layers 2 for oxidation and hydrogen reduction process to obtain a catalyst carrying gas diffusion electrode carrying a platinum catalyst. A solution dispersed with solid acid grains having the sulfuric acid group containing titanium oxide as a base material in a Nafion solution is coated and impregnated on the reaction layer faces of the electrode. Two electrodes are heated and pressed with the impregnated faces faced to each other to obtain an electrode provided with a thin electrolyte layer l having a large ion exchange capacity.
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Inventors:
Takafumi Shimada
Kazuto Kobayashi
Hiroyuki Ohzora
Isao Hirata
Takuya Moriga
Kazuto Kobayashi
Hiroyuki Ohzora
Isao Hirata
Takuya Moriga
Application Number:
JP18770192A
Publication Date:
April 17, 2000
Filing Date:
July 15, 1992
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
H01M8/02; H01M8/10; (IPC1-7): H01M8/02; H01M8/10
Domestic Patent References:
| JP61181078A | ||||
| JP6286662A | ||||
| JP3208261A |
Attorney, Agent or Firm:
Akira Uchida (2 outside)