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- W2393970162 abstract "In this paper, the carbon supported Pt-Fe(Pt-Fe/C) cathodic catalyst in the direct methanol fuel cell was prepared. The results of the energy dispersive X-ray(EDX) analysis, X-ray reflection spectroscopy(XRD) and electrochemical measurements indicate that in the Pt-Fe/C catalyst, Fe exists as the three forms. About 20%(mass fraction) Fe enters the crystal lattice of Pt, forming the alloy with Pt. About 80%(mass fraction) Fe does not enter the crystal lattice of Pt and exists as Fe and Fe2O3. After the Pt-Fe/C catalyst being treated with acid , non-alloying Fe and Fe2O3 in the catalyst are dissolved. Therefore, the electrochemically active specific surface area of the Pt-Fe particles in the Pt-Fe/C catalyst after the acid treatment is 30% larger than that of the Pt-Fe/C catalyst before the acid treatment. Thus, the electrocatalytic activity of the Pt-Fe/C catalyst after the acid treatment for the oxygen reduction is higher than that of the Pt-Fe/C catalyst before the acid treatment. It illustrates that the electrochemically active specific surface area of the Pt-Fe particles in the Pt-Fe/C catalyst can significantly affects the electrocatalytic activity of the Pt-Fe/C catalyst for the oxygen reduction. In addition, it also demonstrates that only alloying Fe can increase the electrocatalytic activity of the Pt for the oxygen reduction and non-alloying Fe has no such effect." @default.
- W2393970162 created "2016-06-24" @default.
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- W2393970162 date "2007-01-01" @default.
- W2393970162 modified "2023-09-25" @default.
- W2393970162 title "Effect of Fe on Electrocatalytic Activity of Pt-Fe/C Catalyst for Oxygen Reduction" @default.
- W2393970162 hasPublicationYear "2007" @default.
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