HIGHLY DURABLE SOLID POLYELECTROLYTE AND ELECTRODE- ELECTROLYTE JOINT BODY USING IT AS WELL AS ELECTROCHEMICAL DEVICE USING THE ELECTRODE-ELECTROLYTE JOINT BODY

Title:

HIGHLY DURABLE SOLID POLYELECTROLYTE AND ELECTRODE- ELECTROLYTE JOINT BODY USING IT AS WELL AS ELECTROCHEMICAL DEVICE USING THE ELECTRODE-ELECTROLYTE JOINT BODY

Document Type and Number:

Japanese Patent JP3656244

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To economically provide a highly durable solid polyelectrolyte which is superior in oxidation resistance against peroxides generated by cell reaction, intending for the use of electrolyte membranes or the like such as polyelectrolyte type fuel cell or water electrolysis device.
SOLUTION: By introducing a chelating functional group in polyelectrolyte material having the chemical structure in which electrolyte group has been introduced into a hydrocarbon skeleton part, metal ions (mixed from the fuel pipe line system or the like) that cause radical formation from peroxides such as hydrogen peroxide generated by cell reaction are captured by chelating functional groups, and the formation of peroxide radicals is inhibited. The introduction of chelating functional group is made by doping with compounds having polyethylene imine or poly-4-vinyl pyridine or the like into the electrolyte, or by the chemical bonding of amino dimethylene phosphonic group. Further, in order to restrain de-doping, it is preferable that a monomer which is cross-linkable and which has a functional group having metal capturing ability such as phosphonic group or carboxylic group or the like is impregnated in the electrolyte membrane.

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Inventors:

Takanao Suzuki
Takumi Taniguchi
Tomo Morimoto
Masaya Kawasumi
Naoki Hasegawa
Atsushi Kamiya

Application Number:

JP2000352300A

Publication Date:

June 08, 2005

Filing Date:

November 20, 2000

Export Citation:

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Assignee:

Toyota Central R & D Labs.

International Classes:

C08F259/08; C08J5/20; C08J5/22; C25B13/08; H01B1/06; H01M8/02; H01M8/10; (IPC1-7): H01M8/02; C25B13/08; H01B1/06; H01M8/10

Domestic Patent References:

JP6025443A
JP9087510A
JP2000080166A
JP9102322A

Foreign References:

WO1999054389A1

Other References:

Gerold Hubner and Emil Roduner,J.Mater.Chem.,Vol.9,No.2(1999),p.409-418

Attorney, Agent or Firm:

Noboru Ueno

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