Title:
METHOD FOR PRODUCING SEPARATOR MATERIAL FOR SOLID POLYMER FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2008/059903
Kind Code:
A1
Abstract:
Disclosed is a method for efficiently producing a separator material for solid
polymer fuel cells, which enables to obtain a uniformly thin separator material
with good quality characteristics for miniaturizing fuel cells. This method
for producing a separator material for solid polymer fuel cells is characterized
by sequentially performing the following steps 1-3. Step 1: A slurry having
a viscosity of 100-1500 mPa s is prepared by dispersing 100 parts by weight of a
carbonaceous powder in a resin solution which is obtained by dissolving 10-35
parts by weight of a resin binder and 0.1-10 parts by weight of a dispersing agent
in an organic solvent. Step 2: A green sheet is prepared by immersing an organic
material sheet having an opening area ratio (R) of through holes of 25-85% in the
slurry for applying the slurry over the both sides of the organic material sheet,
and then drying the resulting sheet for fixing the slurry thereon. Step 3: The
green sheet is cut into a predetermined shape, and one cut sheet or a laminate of
two or more cut sheets are subjected to hot pressing.
Inventors:
HIRANO NOBUYUKI (JP)
Application Number:
PCT/JP2007/072138
Publication Date:
May 22, 2008
Filing Date:
November 08, 2007
Export Citation:
Assignee:
TOKAI CARBON KK (JP)
HIRANO NOBUYUKI (JP)
HIRANO NOBUYUKI (JP)
International Classes:
H01M8/02; H01M8/10
Domestic Patent References:
| WO2007125640A1 | 2007-11-08 |
Foreign References:
| JP2006172776A | 2006-06-29 | |||
| JP2003051317A | 2003-02-21 | |||
| JP2005339953A | 2005-12-08 | |||
| JPH08222241A | 1996-08-30 | |||
| JP2006172776A | 2006-06-29 | |||
| JP2004193044A | 2004-07-08 |
Other References:
See also references of EP 2091100A4
Attorney, Agent or Firm:
FUKUDA, Yasuo et al. (1-16 Kanda Suda-cho, Chiyoda-ku, Tokyo 41, JP)
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