Membrane-electrode assembly for a direct methanol fuel cell

Chemistry: electrical current producing apparatus – product – and – Having earth feature

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429 41, H01M 492, H01M 486

Patent

active

055231772

ABSTRACT:
A direct methanol fuel cell (DMFC) contains a membrane electrode assembly (MEA) including an anode porous electrode structure which can operate on a liquid or vapor methanol/water feed in the absence of a liquid electrolyte such as sulfuric acid, a proton-exchange membrane electrolyte, and a porous gas-diffusion cathode. The anode porous electrode structure includes a three-dimensional reduced (Pt--Ru)O.sub.x catalyst particle-ionomer composite structure, whereby the ionomer coats the individual particles and provides a mechanism for continuous proton transport throughout the composite structure, eliminating the need for a liquid acidic electrolyte. The partially reduced (Pt--Ru)O.sub.x particles are individually ionomer coated prior to anode fabrication. The anode porous electrode structure is subsequently bonded to one side of a thin sheet of a solid proton-conducting ionomer membrane and a cathode structure bonded to the opposite side of the membrane, to form a MEA. Insertion of the MEA into appropriate hardware results in fuel cell fabrication.

REFERENCES:
patent: 3751296 (1973-08-01), Beer
patent: 3840443 (1974-10-01), Beer
patent: 4210501 (1980-07-01), Dempsey et al.
patent: 4311569 (1982-01-01), Dempsey et al.
patent: 4390603 (1983-06-01), Kawana et al.
patent: 4828941 (1989-05-01), Sterzel
patent: 4876115 (1989-10-01), Raistrick
patent: 5028498 (1991-07-01), Lindstrom
patent: 5211984 (1993-05-01), Wilson
patent: 5234777 (1993-08-01), Wilson
patent: 5316871 (1994-05-01), Swathirajan et al.

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