Title:
UNITIZED MEMBRANE ELECTRODE ASSEMBLY AND PROCESS FOR ITS PREPARATION
Document Type and Number:
WIPO Patent Application WO2003063280
Kind Code:
A3
Abstract:
The invention provides a unitized membrane electrode assembly having a first gas diffusion backing having sealing edges; a polymer membrane; a second gas diffusion backing having sealing edges; a first electrocatalyst coating composition present at the interface of the first gas diffusion backing and the polymer membrane; a second electrocatalyst coating composition present at the interface of the second gas diffusion backing and the polymer membrane; and a thermoplastic polymer, fluid impermeable, seal, wherein the thermoplastic polymer is impregnated into the sealing edges of the first and second gas diffusion backings, and the seal envelops a peripheral region of both the first and second gas diffusion backings and the polymer membrane.
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Inventors:
LERTOLA JAMES GERARD (US)
Application Number:
PCT/US2003/001796
Publication Date:
July 29, 2004
Filing Date:
January 22, 2003
Export Citation:
Assignee:
DU PONT (US)
LERTOLA JAMES GERARD (US)
LERTOLA JAMES GERARD (US)
International Classes:
H01M4/86; H01M4/88; H01M4/94; H01M4/96; H01M8/02; H01M8/10; H01M8/24; (IPC1-7): H01M2/08; H01M8/02
Domestic Patent References:
| WO1998033225A1 | 1998-07-30 | |||
| WO2000010216A1 | 2000-02-24 |
Foreign References:
| US20010001052A1 | 2001-05-10 |
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