Title:
METHOD OF MAKING FLUID DIFFUSION LAYERS AND ELECTRODES HAVING REDUCED SURFACE ROUGHNESS
Document Type and Number:
WIPO Patent Application WO2002089237
Kind Code:
A3
Abstract:
The present methods make fluid diffusion layers having reduced surface roughness. The methods used for adhering the loading material to the substrate surface can reduce the average surface roughness of the fluid diffusion layers, thereby reducing leaks in and damage to ion exchange membranes. When fluid diffusion layers and electrodes having reduced surface roughness are employed in membrane electrode assemblies, better reliability and performance are obtained. A method of calculating the surface roughness of a fluid diffusion layer may be used.
Inventors:
STUMPER JUERGEN (CA)
GORDON JOHN ROBERT (CA)
HAAS HERWIG ROBERT (CA)
FONG KELVIN KEEN-VEN (CA)
GORDON JOHN ROBERT (CA)
HAAS HERWIG ROBERT (CA)
FONG KELVIN KEEN-VEN (CA)
Application Number:
PCT/CA2002/000530
Publication Date:
May 30, 2003
Filing Date:
May 01, 2002
Export Citation:
Assignee:
BALLARD POWER SYSTEMS (CA)
STUMPER JUERGEN (CA)
GORDON JOHN ROBERT (CA)
HAAS HERWIG ROBERT (CA)
FONG KELVIN KEEN-VEN (CA)
STUMPER JUERGEN (CA)
GORDON JOHN ROBERT (CA)
HAAS HERWIG ROBERT (CA)
FONG KELVIN KEEN-VEN (CA)
International Classes:
B05D5/12; B24B7/20; C23C16/26; H01M2/14; H01M4/86; H01M4/88; H01M4/94; H01M4/96; H01M6/00; H01M8/10; (IPC1-7): H01M4/96; H01M4/86; H01M8/10; H01M4/88
Domestic Patent References:
| WO1998013890A1 | 1998-04-02 |
Foreign References:
| EP0928036A1 | 1999-07-07 | |||
| EP0869568A1 | 1998-10-07 | |||
| US5635039A | 1997-06-03 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 20 10 July 2001 (2001-07-10)
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