ELECTRODE FOR FUEL CELL - TOYOTA MOTOR CORP

Title:

ELECTRODE FOR FUEL CELL

Document Type and Number:

Japanese Patent JP2005100665

Kind Code:

A

Abstract:

To restrain degradation of efficiency of a fuel cell caused by projection of fibers included in an electrode, in an electrode for a fuel cell jointed to an MEA having an ion-exchange membrane and a catalyst layer.

This electrode for the fuel cell is jointed to an MEA having an ion-exchange membrane and a catalyst layer. The electrode is provided with: a first gas diffusion layer having a first joint surface to be jointed to the MEA, and containing first fibers in its inside; and a second gas diffusion layer having a second joint surface jointed to the first gas diffusion layer, and containing second fibers in its inside. The first gas diffusion layer is so structured that the number per unit area of the first fibers wherein each angle thereof with respect to the first joint surface in the first joint surface is larger than a predetermined value is set smaller than the number per unit area of the second fibers wherein each angle thereof with respect to the second joint surface in the second joint surface is larger than a predetermined value.

Inventors:

NAKADA KEIICHI
NAKANISHI HARUMICHI
ARAKI YASUSHI
KOBAYASHI NORIYUKI

Application Number:

JP2003329327A

Publication Date:

April 14, 2005

Filing Date:

September 22, 2003

Export Citation:

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Assignee:

TOYOTA MOTOR CORP

International Classes:

H01M4/86; H01M8/02; H01M8/10; (IPC1-7): H01M4/86; H01M8/02; H01M8/10

Domestic Patent References:

JP2003173789A	2003-06-20
JP2002352807A	2002-12-06
JP2002313359A	2002-10-25
JP2000299113A	2000-10-24
JP2001085019A	2001-03-30

Attorney, Agent or Firm:

Meisei International Patent Office

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