| 摘要 |
A fuel cell is provided having a positive electrode layer ( 13 ) and a negative electrode layer ( 14 ) disposed on the front and rear sides of an electrolyte membrane ( 12 ), for generating electricity by bringing hydrogen into contact with a catalyst in the negative electrode layer and bringing oxygen into contact with a catalyst in the positive electrode layer. The positive electrode layer includes the components electrolyte, carbon ( 36, 37 ), a catalyst ( 38 ) carried on the carbon, a pore-forming material and a water-repellent resin. In the electrolyte membrane vicinity ( 34 ) of the positive electrode layer, which is a part where the reaction between the oxygen and the hydrogen ions proceeds readily, the electrolyte/carbon weight ratio and the carried catalyst amount are made large. In parts where product water tends to stagnate, the amounts of the pore-forming material and the water-repellent resin are increased.
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