SOLID POLYMER ELECTROLYTE FUEL CELL, AND GAS DIFFUSION ELECTRODE FOR SOLID POLYMER ELECTROLYTE FUEL CELL

Title:

SOLID POLYMER ELECTROLYTE FUEL CELL, AND GAS DIFFUSION ELECTRODE FOR SOLID POLYMER ELECTROLYTE FUEL CELL

Document Type and Number:

Japanese Patent JP2005174607

Kind Code:

A

Abstract:

To provide a solid polymer electrolyte fuel cell in favor of compatibility between high gas permeability and high moisture retention of a gas diffusion electrode.

The fuel cell has a solid polymer electrolyte film 1, a catalyst layer for fuel electrode 2, a gas diffusion electrode for fuel electrode 3, a gas flow distribution plate for fuel electrode 4, a catalyst layer for oxidizer electrode 5, a gas diffusion electrode for oxidizer electrode 6, and a gas flow distribution plate for oxidizer electrode 7. At least one of the gas diffusion electrode for oxidizer electrode 6 and the gas diffusion electrode for fuel electrode 3 has a multi-layer structure having: a rough layer 80 which has gas transmittance and is relatively low in density; an inner tight layer 82 which faces the catalyst layers 5, 2 and is relatively higher in density than the rough layer 80; and an outer tight layer 84 which faces the gas flow distribution plates 7, 4 and is relatively higher in density than the rough layer 80.

Inventors:

HAYASHI TOMONOBU
ISHIGAMI MASAYUKI
SUZUKI MASANORI
KAWAHARA TATSUYA

Application Number:

JP2003409399A

Publication Date:

June 30, 2005

Filing Date:

December 08, 2003

Export Citation:

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Assignee:

AISIN SEIKI
AISIN CHEM
TOYOTA MOTOR CORP

International Classes:

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

Domestic Patent References:

JP2002164056A	2002-06-07
JP2002343369A	2002-11-29
JP2002329501A	2002-11-15
JP2001283875A	2001-10-12

Attorney, Agent or Firm:

Hiroshi Okawa

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