Direct dimethyl ether high temperature polymer electrolyte membrane fuel cells

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Abstract

A high temperature polybenzimidazole (PBI) polymer fuel cell was fed with dimethyl ether (DME) and water vapour mixture on the anode at ambient pressure with air as oxidant. A peak power density of 79 mW/cm2 was achieved at 200°C. A conventional polymer based direct DME fuel cell is liquid fed and suffers from low DME solubility in water. When the DME - water mixture is fed as vapour miscibility is no longer a problem. The increased temperature is more beneficial for the kinetics of the direct oxidation of DME than of methanol. The Open Circuit Voltage (OCV) with DME operation was 50 to 100 mV higher than that of methanol, indicating less fuel crossover.
Original languageEnglish
Publication date2012
Number of pages1
Publication statusPublished - 2012
EventEnergieffektivisering for fremtiden: Konference - Danmarks Tekniske Universitet, Kgs.Lyngby, Denmark
Duration: 20 Nov 2012 → …
http://www.energi-effektivisering.dk/

Conference

ConferenceEnergieffektivisering for fremtiden
LocationDanmarks Tekniske Universitet
CountryDenmark
CityKgs.Lyngby
Period20/11/2012 → …
Internet address

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