Title:
燃料電池電極用触媒材料及びその製造方法
Document Type and Number:
Japanese Patent JP2012508433
Kind Code:
A
Abstract:
Layered catalyst structures for fuel cells, particularly for a Proton Exchange Membrane Fuel Cell (PEMFC), are produced by a reactive spray deposition technology process. The catalyst layers so produced contain particles sized between 1 and 15 nm and clusters of such particles of a catalyst selected from the group consisting of platinum, platinum alloys with transition metals, mixtures thereof and non-noble metals. The catalyst layers without an electrically conducting supporting medium exhibit dendritic microstructure, providing high electrochemically active surface area and electron conductivity at ultra-low catalyst loading. The catalyst layers deposited on an electrically conducting medium, such as carbon, exhibit three-dimensional functional grading, which provides efficient utilization as a catalyst, high PEMFC performance at the low catalyst loading, and minimized limitations caused by reactant diffusion and activation. The catalytic layers may be produced by a single-run deposition method.
Inventors:
Roller, justin
Marrick, Radenca
Fatty, Calid
Niag, roberto
Marrick, Radenca
Fatty, Calid
Niag, roberto
Application Number:
JP2011534981A
Publication Date:
April 05, 2012
Filing Date:
November 06, 2009
Export Citation:
Assignee:
NATIONAL RESEARCH COUNCIL OF CANADA
International Classes:
H01M4/86; H01M4/88; H01M4/90; H01M4/92; H01M8/10
Domestic Patent References:
| JP2006302871A | 2006-11-02 | |||
| JP2007179951A | 2007-07-12 | |||
| JPH0785874A | 1995-03-31 |
Attorney, Agent or Firm:
Ikeda adult
Kazuhiro Yamaguchi
Masakazu Noda
Kazuhiro Yamaguchi
Masakazu Noda