Membrane electrode assembly prepared by direct spray of...

Details Membrane electrode assembly prepared by direct spray of... Membrane electrode assembly prepared by direct spray of...

2011-06-07

2011-06-07

Walker, K (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Method of making a fuel cell, fuel cell stack, or...

C429S492000

Reexamination Certificate

active

07955758

ABSTRACT:
A technique for fabricating an MEA. The technique includes providing a polymer electrolyte proton conducting membrane, and then spraying a catalyst ink directly on the membrane to form a catalyst layer. In one embodiment, the catalyst ink includes the proper ionomer to carbon ratio, such as 0.8/1, for the desired fuel cell performance. In another embodiment, the catalyst ink includes too little ionomer for the proper ionomer to carbon ratio for the desired fuel cell performance. An ionomer layer is sprayed on the membrane before the catalyst layer to provide the proper final ionomer to carbon ratio.

REFERENCES:
patent: 5234777 (1993-08-01), Wilson
patent: 5316871 (1994-05-01), Swathirajan et al.
patent: 5330860 (1994-07-01), Grot et al.
patent: 6074692 (2000-06-01), Hulett
patent: 6277513 (2001-08-01), Swathirajan et al.
patent: 6524736 (2003-02-01), Sompalli et al.
patent: 7232624 (2007-06-01), Kim
patent: 7316794 (2008-01-01), O'Brien
patent: 2002/0034675 (2002-03-01), Starz et al.
patent: WO 03/095509 (2003-11-01), None
Wilson, M.S., Gottesfeld, S., “Thin-Film Catalyst Layers for Polymer Electrolyte Fuel Cell Electrodes”, Journal of Applied Electrochemistry 22 (1992) 1-7.

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