OPERATING CONCEPT FOR DIRECT METHANOL FUEL CELLS

An operating method is described for cold-starting direct methanol fuel cells. After a load has been disconnected (during the preceding operating phase), air is removed from the cathodes by a residual anode gas, and hydrogen is generated at the cathodes by supplying electrical energy. The newly form...

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Bibliographische Detailangaben
1. Verfasser:	MUND, KONRAD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS 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:	An operating method is described for cold-starting direct methanol fuel cells. After a load has been disconnected (during the preceding operating phase), air is removed from the cathodes by a residual anode gas, and hydrogen is generated at the cathodes by supplying electrical energy. The newly formed hydrogen is then stored. For starting-up, in a short-circuit mode, air is resupplied to the cathodes and hydrogen is supplied to the anodes. After an operating temperature has been reached, the operation is switched over to a methanol mode.