Title:
METHOD FOR PRODUCING ELECTROLYTE MEMBRANE FOR FUEL CELL AND METHOD FOR PRODUCING MEMBRANE-ELECTRODE ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2008/001701
Kind Code:
A1
Abstract:
An electrolyte membrane having recesses and projections in the surface is obtained.
Also obtained is a membrane-electrode assembly comprising such an electrolyte
membrane, wherein the contact area between the electrolyte membrane and an electrode
catalyst layer is increased. Specifically, recesses and projections (2a, 2b)
are formed in the surface of an electrolyte membrane (1) composed of a fluorine-based
electrolyte by heating and pressing the electrolyte membrane (1) using plates
(10a, 10b) each having a corrugated surface (11). After the formation, the electrolyte
membrane (1) is subjected to a treatment for imparting an electrolyte polymer
with ion exchange properties through hydrolysis or the like, thereby being formed
into an electrolyte membrane (3) having recesses and projections in the surface.
By respectively arranging electrode catalyst layers (21a, 21b) on both sides
of the electrolyte membrane, there can be obtained a membrane-electrode assembly
(20).
Inventors:
SUZUKI HIROSHI (JP)
Application Number:
PCT/JP2007/062643
Publication Date:
January 03, 2008
Filing Date:
June 18, 2007
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
SUZUKI HIROSHI (JP)
SUZUKI HIROSHI (JP)
International Classes:
H01M8/02; H01M8/10
Foreign References:
| JPH06267556A | 1994-09-22 | |||
| JP2005085544A | 2005-03-31 | |||
| JP2004185930A | 2004-07-02 | |||
| JPH04169069A | 1992-06-17 | |||
| JPH03167752A | 1991-07-19 |
Attorney, Agent or Firm:
HIRAKI, Yusuke et al. (3-20, Toranomon,4-chome Minato-ku, Tokyo 01, JP)
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