Membrane electrode assembly and polymer electrolyte fuel cell
AssigneeToppan Inc.
InventorHiroyuki CHINONE
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Abstract
A membrane electrode assembly includes: a polymer electrolyte membrane; a pair of electrode catalyst layers in contact with the surfaces of the polymer electrolyte membrane with the polymer electrolyte membrane therebetween; and a gas diffusion layer laminated on each of the pair of electrode catalyst layers. Each electrode catalyst layer includes catalytic substances, carbon particles, polymer electrolyte aggregates, and fibrous substances, and the gas diffusion layer has a Gurley value, which represents the air permeability in the thickness direction, of 1.0 second or more and 3.0 seconds or less.
Claims8
A membrane electrode assembly, comprising:
- a polymer electrolyte membrane;
- a pair of electrode catalyst layers with the polymer electrolyte membrane therebetween, the electrode catalyst layers being in contact with surfaces of the polymer electrolyte membrane;
- and
- a gas diffusion layer laminated on each of the pair of electrode catalyst layers;
- wherein each of the pair of electrode catalyst layers includes catalytic substances, carbon particles, polymer electrolyte aggregates, and fibrous substances, and
- the gas diffusion layer has a Gurley value of 1.0 second or more and 3.0 seconds or less, the Gurley value representing air permeability in a thickness direction.
Dependencies are inferred from the claim text.