Title:
POLYELECTROLYTE MEMBRANE
Document Type and Number:
Japanese Patent JP3817213
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a polyelectrolyte membrane for a solid polymer-type fuel cell having a high ion exchange capacity and a high proton conductivity by solving the problem of the deterioration of the material characteristics of a base material by causing graft reaction to a fluorinated polymer through irradiation of radiation beam.
SOLUTION: The polyelectrolyte membrane is constituted of the blend of a fluorinated polymer with a sulfonic acid group introduced by radiation graft polymerization, and a perfluorosulfonic acid-based ion exchange material and/or a perfluorocarboxylic acid-base ion exchange material. Preferably the fluorinated polymer is a powdery material with an average particle diameter of ≤50 μm or a fibrous material with an average diameter of ≤50 μm.
Inventors:
Washio Hoichi
Akihiro Oshima
Kohei Sato
Akihiro Oshima
Kohei Sato
Application Number:
JP2002271011A
Publication Date:
September 06, 2006
Filing Date:
September 18, 2002
Export Citation:
Assignee:
Waseda University
International Classes:
C08J5/22; C08K5/00; C08L27/22; C25B13/08; H01B1/06; H01M8/02; H01M8/10; (IPC1-7): C08J5/22; C08K5/00; C08L27/22; H01B1/06; //C25B13/08; H01M8/02; H01M8/10
Domestic Patent References:
| JP2001029800A | ||||
| JP11111310A |
Attorney, Agent or Firm:
Mamoru Ushiki
Toshikichi Somekawa
Kuniaki Toyama
Shimizu Sakaematsu
Toshikichi Somekawa
Kuniaki Toyama
Shimizu Sakaematsu