Shukla, A. K. ; Neergat, M. ; Bera, Parthasarathi ; Jayaram, V. ; Hegde, M. S. (2001) An XPS study on binary and ternary alloys of transition metals with platinized carbon and its bearing upon oxygen electroreduction in direct methanol fuel cells Journal of Electroanalytical Chemistry, 504 (1). pp. 111-119. ISSN 0022-0728
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00220...
Related URL: http://dx.doi.org/10.1016/S0022-0728(01)00421-1
Abstract
The present X-ray photoelectron spectroscopic study on carbon-supported Pt, Pt-Cr, Pt-Co, Pt-Ni, Pt-Co-Cr and Pt-Co-Ni electrocatalysts suggests that while Pt-Cr/C, Pt-Co/C and Pt-Ni/C binary alloy electrocatalysts are surface rich in platinum, both Pt-Co-Cr/C and Pt-Co-Ni/C ternary electrocatalysts happen to be surface rich in base metals. Among these electrocatalysts, Pt-Co/C electrocatalyst is found to possess a minimum amount of platinum oxides. Accordingly, Pt-Co/C exhibits a higher electrocatalytic activity towards oxygen-reduction reaction in the solid-polymer-electrolyte direct methanol fuel cells.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Electrocatalysis; Alloy Electrocatalysts; X-ray Photoelectron Spectroscopy; Oxygen-reduction Reaction; Direct Methanol Fuel Cells |
| ID Code: | 16085 |
| Deposited On: | 15 Nov 2010 14:14 |
| Last Modified: | 17 Jul 2012 08:35 |
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