Title:
ガス拡散層、膜電極接合体および燃料電池
Document Type and Number:
Japanese Patent JP7302474
Kind Code:
B2
Abstract:
An object of the present invention is to provide a gas diffusion layer that serves to produce a fuel cell showing improved high power generation performance. A gas diffusion layer comprising a carbon sheet and a microporous layer disposed on at least one surface of the carbon sheet, and meeting the requirement "C is equal to or greater than 0", wherein: C, which is referred to as "index for simultaneous realization of a required in-plane oxygen permeation coefficient and electrical resistance", is calculated by subtracting the product of B multiplied by 60 from A and adding 310 to the difference, A, which is referred to as "in-plane oxygen permeation coefficient", is the rate of oxygen permeation in an in-plane direction in a gas diffusion layer that occurs when a pressure of 0.5 MPa is applied in the through-plane direction to a surface of the gas diffusion layer to compress an arbitrarily selected region having a width of 10 mm and a depth of 3 mm in the gas diffusion layer, and B is the "electrical resistance" that occurs when the gas diffusion layer is compressed by applying a pressure of 2 MPa in the through-plane direction.
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Inventors:
Yamamoto Umi
Utsunomiya Masamichi
Isamu Momoto
Yasuaki Tanimura
Utsunomiya Masamichi
Isamu Momoto
Yasuaki Tanimura
Application Number:
JP2019536601A
Publication Date:
July 04, 2023
Filing Date:
June 28, 2019
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
H01M4/96; H01M8/10
Foreign References:
| WO2015146706A1 | ||||
| WO2015125748A1 | ||||
| WO2016076132A1 | ||||
| WO2017110690A1 |