Title:
PROCESS FOR PRODUCING POLYELECTROLYTE MEMBRANE, POLYELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2009/035131
Kind Code:
A1
Abstract:
This invention provides a process for producing a polyelectrolyte membrane,
comprising a membrane forming step of forming a membrane from a polyelectrolyte
solution containing a hydrocarbon block-type polyelectrolyte and a solvent
to produce a solvent-containing block-type polyelectrolyte membrane and a
heat treatment step of heating the solvent-containing block-type polyelectrolyte
membrane to form a polyelectrolyte membrane. The process is characterized
in that the temperature of the heat treatment is a temperature above the heat decomposition
start temperature of the hydrocarbon block-type polyelectrolyte, and the residual
amount of the solvent in the polyelectrolyte membrane after the heat treatment
is brought to not less than 1% by weight.
Inventors:
HASEGAWA, Hirohiko (2-6-513, Ikku-cho Niihama-sh, Ehime 25, 7920025, JP)
Application Number:
JP2008/066805
Publication Date:
March 19, 2009
Filing Date:
September 10, 2008
Export Citation:
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 1048260, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 1048260, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 1048260, JP)
International Classes:
H01M8/02; C08J5/22; H01B1/06; H01B13/00; H01M8/10
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (Property Service Limited,5-33, Kitahama 4-chome,Chuo-ku, Osaka-sh, Osaka 50, 5418550, JP)