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• W2026075903 abstract "The electrooxidation of methoxy methane (dimethyl ether) was studied at different Pt-based electrocatalysts in a standard three-electrode electrochemical cell. It was shown that alloying platinum with ruthenium or tin leads to shift the onset of the oxidation wave towards lower potentials. On the other hand, the maximum current density achieved was lower with a bimetallic catalyst compared to that obtained with a Pt catalyst. The direct oxidation of dimethoxy methane in a fuel cell was carried out with Pt/C, PtRu/C and PtSn/C catalysts. When Pt/C catalyst is used in the anode, it was shown that the pressure of the fuel and the temperature of the cell played important roles to enhance the fuel cell electrical performance. An increase of the pressure from 1 to 3 bar leads to multiply by two times the maximum achieved power density. An increase of the temperature from 90 to 110 °C has the same effect. When PtRu/C catalyst is used in the anode, it was shown that the electrical performance of the cell was only a little bit enhanced. The maximum power density only increased from 50 to 60 mW cm−2 at 110 °C using a Pt/C anode and a Pt0.8Ru0.2/C anode, respectively. But, the maximum power density is achieved at lower current densities, i.e. higher cell voltages. The addition of ruthenium to platinum has other effect: it introduces a large potential drop at relatively low current densities. With the Pt0.5Ru0.5/C anode, it has not been possible to applied current densities higher than 20 mA cm−2 under fuel cell operating conditions, whereas 250 and almost 400 mA cm−2 were achieved with Pt0.8Ru0.2/C and Pt/C anodes. The Pt0.9Sn0.1/C anode leads to higher power densities at low current densities and to the same maximum power density as the Pt/C anode." @default.
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• W2026075903 date "2006-06-01" @default.
• W2026075903 modified "2023-10-17" @default.
• W2026075903 title "Methoxy methane (dimethyl ether) as an alternative fuel for direct fuel cells" @default.
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• W2026075903 doi "https://doi.org/10.1016/j.jpowsour.2005.07.080" @default.
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