Development of Pt and Pt-Fe catalysts supported on multiwalled carbon nanotubes for oxygen reduction in direct methanol fuel cells (Articolo in rivista)

Type
Label
  • Development of Pt and Pt-Fe catalysts supported on multiwalled carbon nanotubes for oxygen reduction in direct methanol fuel cells (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1149/1.2938368 (literal)
Alternative label
  • Baglio, V. ; Di Blasi, A. ; D'Urso, C. ; Antonucci, V. ; Aricò, A. S. ; Ornelas, R. ; Morales-Acosta, D. ; Ledesma-Garcia, J. ; Godinez, L.A. ; Arriaga, L.G. ; Alvarez-Contreras, L. (2008)
    Development of Pt and Pt-Fe catalysts supported on multiwalled carbon nanotubes for oxygen reduction in direct methanol fuel cells
    in Journal of the Electrochemical Society; Electrochemical Society Inc., Pennington (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Baglio, V. ; Di Blasi, A. ; D'Urso, C. ; Antonucci, V. ; Aricò, A. S. ; Ornelas, R. ; Morales-Acosta, D. ; Ledesma-Garcia, J. ; Godinez, L.A. ; Arriaga, L.G. ; Alvarez-Contreras, L. (literal)
Pagina inizio
  • B829 (literal)
Pagina fine
  • B833 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 155 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-Istituto di Tecnologie Avanzate per l'Energia, 98126 Messina, Italy; Tozzi Renewable Energy SpA, 48010 Mezzano (RA), Italy; Centro de Investigación y Desarrollo Tecnólogico en Electroquímica, C. P. 76703 Querétaro, México ; Centro de Investigación en Materiales Avanzados S. C., C. P. 31109, Chihuahua, Chih., México (literal)
Titolo
  • Development of Pt and Pt-Fe catalysts supported on multiwalled carbon nanotubes for oxygen reduction in direct methanol fuel cells (literal)
Abstract
  • Pt and Pt-Fe catalysts supported on multiwalled carbon nanotubes (MWCNTs) were prepared by impregnation and reduction at intermediate temperature (400°C). The MWCNTs with diameters ranging from 20 to 100 nm were synthesized by a spray pyrolysis technique. Pt/MWCNTs and Pt-Fe/MWCNT catalysts were characterized by X-ray diffraction, X-ray fluorescence, scanning electron microscope--energy dispersive X-ray analysis, and transmission electron microscopy techniques. The electrocatalytic behavior for the oxygen reduction reaction was investigated in rotating disk electrode configuration in an acidic medium, also in the presence of various methanol concentrations (0.01, 0.1, and 1 M). An anodic shift of the peak potential for methanol oxidation of ?150 mV was observed in the presence of 1 M methanol concentration for the Pt-Fe catalyst compared to the Pt catalyst. Both materials were used as cathodes in a direct methanol fuel cell at 30 and 60°C. A better performance was obtained for the cell based on Pt-Fe/MCWNTs as cathode catalyst. Although slight iron dissolution was observed after two weeks of discontinuous operation, the performance of the Pt-Fe catalyst was larger than the Pt catalyst. (literal)
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