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Carbon supported Pt 75 M 25 ( M = Co , Ni ) alloys as anode and cathode electrocatalysts for direct methanol fuel cells
| Content Provider | Semantic Scholar |
|---|---|
| Author | Antolini, Ermete Salgado, J. R. C. Gonzalez, Ernesto Rafael |
| Copyright Year | 2005 |
| Abstract | The behaviour of carbon supported Pt75M25 (M = Co, Ni) electrocatalysts, both as anode and cathode materials, was investigated in direct methanol fuel cells (DMFCs) and compared to that of a pure Pt electrocatalyst on the same carbon support. The physical and morphological characteristics of these electrocatalysts were examined by XRD, XAS and TEM techniques. The performances of Pt75Ni25/C and Pt75Co25/C as cathode materials in DMFC were better than those of the same electrocatalysts as anode materials. When used as cathode materials the cell with Pt75Ni25/C showed a better performance than those with Pt/C or Pt75Co25/C both in terms of mass activity and specific activity. The performances of these electrocatalysts as anode materials in DMFC were similar to that of Pt. The enhanced performance of Pt75Ni25/C as cathode electrocatalyst was ascribed both to the improved activity for oxygen reduction and to the higher methanol tolerance of the alloy. 2005 Elsevier B.V. All rights reserved. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://gecea.ist.utl.pt/Publications/JRS/P07_salgado_JEC_2005.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
