Shukla, A. K. ; Raman, R. K. ; Choudhury, N. A. ; Priolkar, K. R. ; Sarode, P. R. ; Emura, S. ; Kumashiro, R. (2004) Carbon-supported Pt-Fe alloy as a methanol-resistant oxygen-reduction catalyst for direct methanol fuel cells Journal of Electroanalytical Chemistry, 563 (2). pp. 181-190. ISSN 0022-0728
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jelechem.2003.09.010
Abstract
Crossover of methanol from the anode to the cathode through the polymer-electrolyte membrane in solid-polymer-electrolyte direct methanol fuel cells constitutes a significant loss in their performance. Pt/C and Pt-Fe/C electrocatalysts have been characterized by X-ray diffraction, and X-ray photoelectron and X-ray absorption spectroscopies in conjunction with electrochemistry. It is found that Pt-Fe/C alloy crystallizing in an ordered face centered tetragonal crystal structure with higher proportions of active-platinum sites and a completely different nearest neighbour environment than Pt/C exhibits significantly high oxygen-reduction activity in the presence of methanol while Pt/C shows a methanol poisoning effect under similar conditions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Pt-Fe Alloy; Oxygen-reduction Catalyst; Direct Methanol Fuel Cells; X-ray Photoelectron Spectroscopy; X-ray Absorption Spectroscopy |
| ID Code: | 81824 |
| Deposited On: | 07 Feb 2012 11:47 |
| Last Modified: | 07 Feb 2012 11:47 |
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