INK COMPOSITION FOR GAS DIFFUSION LAYER
PROBLEM TO BE SOLVED: To provide an ink composition for gas diffusion, capable of being simplified in manufacturing processes, reducing an environmental load, hardly blocked in gas diffusion property, and also adaptable to a load environment set for a battery.SOLUTION: In a solid polymer fuel cell i...
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Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an ink composition for gas diffusion, capable of being simplified in manufacturing processes, reducing an environmental load, hardly blocked in gas diffusion property, and also adaptable to a load environment set for a battery.SOLUTION: In a solid polymer fuel cell including a catalyst layer provided on both surfaces of a polymer electrolyte membrane and a gas diffusion layer provided on other surface side of the catalyst layer, the gas diffusion layer comprises a coating layer which includes a conductive porous base material with gas diffusion ability and conductivity and conductive particles, and an ink for a gas diffusion layer is coated on the conductive porous base material. The ink contains the conductive particles obtained by mixing first carbon particles, which have a center diameter 1/10 or larger than an average pore diameter of the conductive porous base material, with second carbon particles, which have a center diameter 1/3 or smaller than that of the first carbon particles, at a mixture ratio M1/M2 of 95/5-70/30. |
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