MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER ELECTROLYTE FUEL CELL

Title:

MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER ELECTROLYTE FUEL CELL

Document Type and Number:

WIPO Patent Application WO/2019/189839

Kind Code:

A1

Abstract:

This membrane electrode assembly comprises: a solid polymer electrolyte membrane including a first face and a second face which is on the reverse side from the first face; a fuel electrode-side electrode catalyst layer which contains a first catalyst substance, a first conductive carrier carrying the first catalyst substance, and a first polymer electrolyte, and is bonded to the first face; and an oxygen electrode-side electrode catalyst layer which contains a second catalytic substance, a second conductive carrier carrying the second catalytic substance, a second polymer electrolyte, and a fibrous substance, and is bonded to the second face. The membrane electrode includes voids, and the voids include pores having a diameter of 3 nm to 5.5 µm. A distribution curve showing the distribution of pore volume versus pore diameter has a peak in the pore diameter range of 0.06-0.11 µm, wherein the pore volume is the total volume of pores having a certain pore diameter and is measured by mercury porosimetry, and the pore diameter is calculated from the pore volume.

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JP7204768	fuel cell
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Inventors:

OZAWA MADOKA (JP)
MICHI HIROYUKI (JP)

Application Number:

PCT/JP2019/014211

Publication Date:

October 03, 2019

Filing Date:

March 29, 2019

Export Citation:

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Assignee:

TOPPAN PRINTING CO LTD (JP)

International Classes:

H01M4/86; H01M8/10

Domestic Patent References:

WO2011013206A1

2011-02-03

Foreign References:

JP2001338651A	2001-12-07
JPH11329452A	1999-11-30
JP2005310714A	2005-11-04
JP2006253030A	2006-09-21
JP2006134630A	2006-05-25
JPH10241703A	1998-09-11
JPS5537178B2	1980-09-26

Other References: