CATALYST-CONTAINING GAS DIFFUSION LAYER FOR FUEL CELLS AND PROCESS FOR PRODUCING IT

The invention relates to a gas diffuser substrate containing catalysts for fuel cells, especially low temperature fuel cells, such as PEMFC and DMFC. The gas diffuser substrate is used on the anode side of the fuel cell and contains catalyst components which result in the removal of carbon monoxide...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LOPEZ, MARCO, SCHLEUNUNG, ANDREAS, RUTH, KARSTEN, STARZ, KARL-ANTON
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	The invention relates to a gas diffuser substrate containing catalysts for fuel cells, especially low temperature fuel cells, such as PEMFC and DMFC. The gas diffuser substrate is used on the anode side of the fuel cell and contains catalyst components which result in the removal of carbon monoxide (in the PEMFC) and respectively the oxidation of methanol (in the DMFC). Said catalyst components are produced directly in porous substrate material by thermal treatment of suitable precursor compounds and are homogeneously distributed over the total volume of the gas diffuser substrate. As a result, the catalyst components have particularly high activity. The invention also relates to a method for the production of a gas diffuser substrate containing catalysts. The gas diffuser substrates used in membrane electrode units (MEEs) for low temperature fuel cells, especially for PEM-fuel cells, are operated with reformate gas containing CO. Said substrates are also used in direct-methanol-fuel cells (DMFC).