Title:
GAS DIFFUSION ELECTRODE, METHOD FOR PRODUCING SAME AND MEMBRANE ELECTRODE ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2021/020288
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a gas diffusion electrode which causes less damage to an electrolyte membrane or the like due to fluff in the outer peripheral portion during the production of a membrane electrode assembly. The present invention is a gas diffusion electrode which comprises a conductive porous base material containing carbon fibers and a microporous layer that is formed on the surface of the conductive porous base material, and which satisfies at least one of the requirements (1) and (2) described below. (1) When the gas diffusion electrode is viewed in plan, the number of carbon fibers protruding from an edge by 20 μm or more with respect to the length of the edge is less than 1.0/cm. (2) In a side view of an edge of the gas diffusion electrode, the number of carbon fibers inclined at an angle of 30° or more relative to the in-plane direction of the gas diffusion electrode and having a length of 10 μm or more, with respect to the length of the edge, is less than 1.0/cm.
Inventors:
MIYAKE TORU (JP)
MINOMO MICHIKO (JP)
KATO SHO (JP)
MINOMO MICHIKO (JP)
KATO SHO (JP)
Application Number:
PCT/JP2020/028493
Publication Date:
February 04, 2021
Filing Date:
July 22, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
H01M8/10; H01M4/96; H01M8/1004
Foreign References:
| JP2007005122A | 2007-01-11 | |||
| JP2016091997A | 2016-05-23 | |||
| JP2019167651A | 2019-10-03 | |||
| JP3368907B2 | 2003-01-20 | |||
| JP2005149803A | 2005-06-09 |
Download PDF:
Previous Patent: OPTICAL ELEMENT
Next Patent: POLYARYLENE SULFIDE RESIN FILM, METAL LAYERED PRODUCT, PRODUCTION METHOD FOR POLYARYLENE SULFIDE RES...
Next Patent: POLYARYLENE SULFIDE RESIN FILM, METAL LAYERED PRODUCT, PRODUCTION METHOD FOR POLYARYLENE SULFIDE RES...