Gas diffusion electrode base material and production method therefor, and solid polymer fuel cell
AssigneeToray Industries, Inc.
InventorsMasamichi Utsunomiya, Fumitaka Watanabe
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Abstract
A fuel cell with high productivity, high power generation performance and high durability is described, along with a gas diffusion electrode base material having a microporous layer on one side of an electrically conductive porous base material, where the electrically conductive porous base material contains carbon fiber and resin carbide and has a density of 0.25 to 0.39 g/cm3 and a pore mode diameter in a range of 30 to 50 μm. The microporous layer contains a carbonaceous powder and a fluororesin and has a surface roughness of 2.0 to 6.0 μm, a porosity of 50 to 95%, and a pore mode diameter of 0.050 to 0.100 μm.
Claims15
A gas diffusion electrode base material having a microporous layer on one side of an electrically conductive porous base material,
- the electrically conductive porous base material containing carbon fiber and resin carbide and having a density of 0.25 to 0.39 g/cm3 and a pore mode diameter in a range of 30 to 50 μm, and
- the microporous layer containing a carbonaceous powder and a fluororesin and having a surface roughness of 2.0 to 6.0 μm, a porosity of 50 to 95%, and a pore mode diameter of 0.050 to 0.100 μm.
Dependencies are inferred from the claim text.