Title:
CATALYST INK
Document Type and Number:
WIPO Patent Application WO2004054021
Kind Code:
A3
Abstract:
A catalyst ink is provided, comprising: 25-95 % by weight water; 1-50 % by weight of at least one solid catalyst, typically a highly dispersed platinum catalyst; 1 50 % by weight of at least one polymer electrolyte in acid (H<+>) form; and 1-50 % by weight of at least one polar aprotic organic solvent. The catalyst ink typically has a viscosity at 1 sec<-1> of 10 Pa.sec or less. The catalyst ink typically does not ignite spontaneously when dried to completion in air at a temperature of 80° C or greater. The catalyst ink may be used in the fabrication of membrane electrode assemblies for use in fuel cells.
Inventors:
VELAMAKANNI BHASKAR V
MEKALA DAVID R
HANSON ERIC J
MEKALA DAVID R
HANSON ERIC J
Application Number:
PCT/US2003/033133
Publication Date:
February 03, 2005
Filing Date:
October 17, 2003
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
C09D11/00; C09D11/02; H01M4/86; H01M4/88; H01M8/00; H01M8/10; H01M4/92; (IPC1-7): H01M8/10; C09D11/00; H01M4/86
Foreign References:
| US20020136940A1 | 2002-09-26 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06)
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 02 2 April 2002 (2002-04-02)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06)
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 02 2 April 2002 (2002-04-02)
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