ELECTRODE STRUCTURE FOR SOLID POLYMER FUEL CELL
PROBLEM TO BE SOLVED: To provide solid polymer fuel cell structure in which the deterioration of function can be suppressed, even in the condition of fuel deficiency. SOLUTION: Moisture retaining layer containing 5 to 20 wt.% of water retaing material which enhances the water retainability to the to...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
20.05.2004
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide solid polymer fuel cell structure in which the deterioration of function can be suppressed, even in the condition of fuel deficiency. SOLUTION: Moisture retaining layer containing 5 to 20 wt.% of water retaing material which enhances the water retainability to the total weight of the electronic conductive material and the water retaining material is provided on a carbon base material in an anode dispersion layer. Or the carbon particles, in which the water-absorbing quantity is ≥150cc/g in saturated water vapor pressure at 60°C is contained, the water absorption rate at 60°C is made to be 40 to 85% and the difference in pressure by pressure difference measuring method is ≤60 to 120mmaq. The ratio of catalyst material charge quantity in cathode catalyst layer, existing in proton-conducting path from the polymer electrolyte film measured using the cyclic voltammetry method, is set ≥15% with respect to charged quantity of all the catalyst materials existing in the cathode catalyst layer. COPYRIGHT: (C)2004,JPO |
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Bibliography: | Application Number: JP20020312645 |