Ethanol Electrooxidation on Pt with Lanthanum Oxide as Cocatalyst in a DAFC

Autor(es)

Santoro, T. A. B. ; Oliveira Neto, A. ; Forbicini, C. A. L. G. de O. ; Linardi, M. ; Rodriguez, J. L. ; Pastor, E.

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY; v. 2012, p. 6-pg., 2012-01-01.

Resumo

Electrocatalytic activity toward ethanol electrooxidation of Pt particles in PtLa/C catalysts with different Pt : La ratios has been studied with different electrochemical and spectroscopic techniques, and the results were compared to those of Pt/C catalyst. Significant enhancement in the electrocatalytic activity has been achieved by depositing the Pt particles with lanthanum oxides/hydroxides using an alcohol reduction method. Compared to Pt/C catalyst, PtLa/C materials exhibit a lower onset potential and a higher electron-transfer rate constant for the investigated reaction. These studies illustrate the possibility of utilizing Pt/C with La oxides/ hidroxides as electrocatalyst for direct alcohol fuel cells (DAFCs). (AU)

• Processo FAPESP: 03/03127-0 - Estudos eletroquímicos sobre eletrocatalisadores a base de platina utilizando combustíveis alternativos em células do tipo eletrolíto polimérico sólido
• Beneficiário: Almir Oliveira Neto
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores