MEA for alkaline direct ethanol fuel cell with alkali doped PBI membrane and non-platinum electrodes |
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Authors: | A.D. Modestov M.R. Tarasevich A. Yu. Leykin V.Ya. Filimonov |
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Affiliation: | 1. A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prospect 31, 119991 Moscow, Russia;2. National Innovation Company “New Energy Projects”, Prechistenka Street 18, 119034 Moscow, Russia |
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Abstract: | This paper reports on the fabrication of MEA for alkaline direct ethanol fuel cell (ADEFC). The MEA was fabricated using non-platinum electrocatalysts and a membrane of alkali doped polybenzimidazole (PBI). The employed oxygen reduction catalyst was prepared by pyrolysis of 5,10,15,20-tetrakis(4-methoxyphenyl)-21H,23H-porphine cobalt(II) supported on XC72 carbon. This catalyst is tolerant to ethanol. Electrocatalyst at the anode was RuV alloy supported on XC72 carbon. It was synthesized by reduction of respective salts at elevated temperature. Single cell power density of 100 mW cm−2 at U = 0.4 V was achieved at 80 °C using air at ambient pressure and 3 M KOH + 2 M EtOH anode feed. The developed MEA is considered viable for use in emergency power supply units and in power sources for portable electronic equipment. |
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Keywords: | PBI Direct ethanol fuel cell Alkaline fuel cell |
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