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Title:
METHOD FOR MANUFACTURING ELECTRODE CATALYST FOR FUEL CELL, ELECTRODE CATALYST FOR FUEL CELL, AND SOLID POLYMER ELECTROLYTE FUEL CELL COMPRISING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/148765
Kind Code:
A1
Abstract:
This invention provides a method for manufacturing an electrode catalyst for a fuel cell, comprising an immersion step of immersing at least one of a catalyst component, a carrier formed of electroconductive particles, and a polymeric electrolyte in a solvent (step A), a catalyst supporting step of supporting the catalyst component on a carrier (step B), and a reaction site production step of depositing a polymeric electrolyte on the catalyst-supported carrier (step C). The method is characterized in that, in at least one of the steps (A), (B), and (C), ultrasonic waves are applied. The method for manufacturing an electrode catalyst for a fuel cell can suppress the support of a catalyst within pores in a carrier in a simple manner and thus can enhance the utilization efficiency of a noble metal catalyst and can improve power generation performance. There are also provided an electrode catalyst for a fuel cell, and a solid polymer electrolyte fuel cell comprising the electrode catalyst for a fuel cell, which can realize a high cell output.

Inventors:
KAWAMURA TETSUO (JP)
TAKAHASHI HIROAKI (JP)
MAEDA YASUAKI (JP)
NISHIMURA ROKURO (JP)
OKITSU KENJI (JP)
Application Number:
PCT/JP2007/062549
Publication Date:
December 27, 2007
Filing Date:
June 15, 2007
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
PUBLIC UNIVERSITY CORP OSAKA P (JP)
KAWAMURA TETSUO (JP)
TAKAHASHI HIROAKI (JP)
MAEDA YASUAKI (JP)
NISHIMURA ROKURO (JP)
OKITSU KENJI (JP)
International Classes:
H01M4/88; B01J23/42; B01J37/02; B01J37/34; H01M4/86; H01M4/96; H01M8/10
Foreign References:
JP2005270863A2005-10-06
JP2006092957A2006-04-06
JPH10241703A1998-09-11
JP2006097111A2006-04-13
JPH0113715A
JP2003115299A2003-04-18
JP2005174786A2005-06-30
JP2005353376A2005-12-22
JP2005190726A2005-07-14
Other References:
See also references of EP 2045859A4
Attorney, Agent or Firm:
HIRAKI, Yusuke et al. (3-20 Toranomon 4-chome,Minato-k, Tokyo 01, JP)
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