Gas diffusion electrode substrate
AssigneeToray Industries, Inc.
InventorsMasamichi Utsunomiya, Yasuaki Tanimura, Toshiya Kamae
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Abstract
A gas diffusion electrode substrate that is used in a fuel cell, wherein a microporous layer constituted by a carbon based filler and a fluororesin is formed on one surface of the electrode substrate, the sliding angle of water on the surface on the opposite side of the surface on which the microporous layer is formed is 30 degrees or less, and the through-plane gas permeation resistance is 15 to 190 mmAq.
Claims16
A gas diffusion electrode substrate for a fuel cell, which comprises a microporous layer formed on a first surface of an electrode substrate, wherein the microporous layer comprises a carbon based filler and a fluororesin, and
- wherein
- a water sliding angle on a second surface of the electrode substrate, which is opposite to the first surface on which the microporous layer is formed, is 30 degrees or less, and
- the through-plane gas permeation resistance of the gas diffusion electrode substrate is 15 to 190 mmAq at a flow rate of 58 cc/min/cm2.
Dependencies are inferred from the claim text.