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Title:
FINE CATALYST PARTICLES AND METHOD FOR PRODUCING FINE CATALYST PARTICLES
Document Type and Number:
WIPO Patent Application WO/2012/011170
Kind Code:
A1
Abstract:
Provided are: fine catalyst particles having high catalytic activity; and a method for producing fine catalyst particles. Specifically provided are fine catalyst particles, each of which comprises a center particle that contains a palladium alloy and an outermost layer that contains platinum. The fine catalyst particles are characterized by comprising an intermediate layer between the center particle and the outermost layer, said intermediate layer being composed only of elemental palladium.

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Inventors:
ARAI TATSUYA (JP)
TAKEHIRO NAOKI (JP)
SEKIZAWA KOSHI (JP)
KIMURA HIROKO (JP)
IIO ATSUO (JP)
Application Number:
PCT/JP2010/062263
Publication Date:
January 26, 2012
Filing Date:
July 21, 2010
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
ARAI TATSUYA (JP)
TAKEHIRO NAOKI (JP)
SEKIZAWA KOSHI (JP)
KIMURA HIROKO (JP)
IIO ATSUO (JP)
International Classes:
B01J23/89; B01J33/00; B01J35/08; H01M4/88; H01M4/90
Foreign References:
JP2008525638A2008-07-17
US20070031722A12007-02-08
JP2008261045A2008-10-30
JP2010198885A2010-09-09
Other References:
SHAO, M. ET AL.: "Pt Monolayer on Porous Pd-Cu Alloys as Oxygen Reduction Electrocatalysts", J. AM. CHEM. SOC., vol. 132, no. 27, 21 June 2010 (2010-06-21), pages 9253 - 9255, XP055109180
SRIVASTAVA, R. ET AL.: "Efficient Oxygen Reduction Fuel Cell Electrocatalysis on Voltammetrically Dealloyed Pt-Cu-Co Nanoparticles", ANGEWANDTE CHEMIE INTERNATIONAL EDITION, vol. 46, no. 47, 3 December 2007 (2007-12-03), pages 8988 - 8991, XP055109184
KULP, C. ET AL.: "Electrochemical Synthesis of Core-Shell Catalysts for Electrocatalytic Applications", CHEMPHYSCHEM, vol. 11, no. 13, 28 June 2010 (2010-06-28), pages 2854 - 2861, XP055109186
See also references of EP 2596863A4
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (JP)
Kishimoto Expert (JP)
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Claims:



 
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