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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Ethanol Electrooxidation by Plurimetallic Pt-Based Electrocatalysts Prepared by Microwave Assisted Heating

Texto completo
Autor(es):
Palma, L. M. [1] ; Almeida, T. S. [1] ; Leonello, P. H. [1] ; De Andrade, A. R. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Ribeirao Preto, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Journal of the Electrochemical Society; v. 161, n. 4, p. F473-F479, 2014.
Citações Web of Science: 5
Resumo

The direct ethanol fuel cell (DEFC) has received increasing attention once the complete ethanol oxidation is difficult to accomplish and, so far, no catalyst has efficiently cleaved the C-C bond. This paper reports on electrocatalysts supported on carbon containing 40 wt% metal loading of Pt, Ru, Ni, and Sn prepared by microwave-assisted heating. The electrocatalysts displayed homogeneously distributed particles ranging from 3 to 5 mm. The cyclic voltammetric and chronoamperometric curves recorded in the presence and absence of ethanol in acid medium exhibited the characteristic transition metal electrocatalyst profile. Acetic acid and acetaldehyde were the major products after 12 h of electrolysis. The best electrocatalyst in a single Direct Ethanol Fuel Cells (DEFC) was Pt75Sm13Ru11Ni1/C (55 mW cm(-2)). This value denoted that the catalyst performed surprisingly well at relatively low temperature (80 degrees C). (C) 2014 The Electrochemical Society. All rights reserved. (AU)

Processo FAPESP: 11/10213-6 - Desenvolvimento de células a combustível de álcoois direta: produção de protótipos de alta potência
Beneficiário:Livia Martins da Palma
Linha de fomento: Bolsas no Brasil - Doutorado