GAS DIFFUSION ELECTRODE BASE, LAMINATE AND FUEL CELL

Title:

GAS DIFFUSION ELECTRODE BASE, LAMINATE AND FUEL CELL

Document Type and Number:

WIPO Patent Application WO/2017/170355

Kind Code:

A1

Abstract:

[Problem] To provide a gas diffusion electrode base which achieves a good balance between short-circuit resistance and flooding resistance, while having high durability and good power generation performance. [Solution] A gas diffusion electrode base which comprises a microporous layer 1 on one surface of a conductive porous base, and which is configured such that: the microporous layer 1 has a dense part A and a dense part B; the dense part A is a region that contains a fluororesin and a carbonaceous powder having a primary particle diameter of from 20 nm to 39 nm (inclusive); the dense part A has a thickness of from 30% to 100% (inclusive) when the thickness of the microporous layer 1 is taken as 100%, and has a width of from 10 μm to 200 μm (inclusive); and the dense part B is a region that contains a fluororesin and a carbonaceous powder having a primary particle diameter of from 40 nm to 70 nm (inclusive).

Inventors:

UTSUNOMIYA MASAMICHI (JP)
TANIMURA YASUAKI (JP)
KAMAE TOSHIYA (JP)
URAI JUNICHI (JP)

Application Number:

PCT/JP2017/012306

Publication Date:

October 05, 2017

Filing Date:

March 27, 2017

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)

International Classes:

H01M4/96; B32B5/32; B32B27/30; H01M8/10

Foreign References:

JP2009070637A	2009-04-02
JP2007123197A	2007-05-17
JP2006097111A	2006-04-13
JP2009081031A	2009-04-16
JP2011175891A	2011-09-08
JP3382213B2	2003-03-04
JP2006004879A	2006-01-05

Other References: