Performance of Pd electrocatalyst supported on a physical mixture indium Tin oxide–carbon for glycerol electro– oxidation in alkaline media
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Electroanalysis
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Palladium electrocatalysts, supported on Vulcan
XC 72 carbon and indium tin oxide (ITO) with different
ratios, were prepared by borohydride reduction method
and analysed for glycerol electro-oxidation application in
the presence of KOH solution. Transmission electron
microscopy (TEM) and X-ray diffraction (XRD) techniques
were used to characterize the particle size and crystal
electrocatalyst structures, whereas their catalytic activities
regarding the glycerol electro-oxidation were evaluated
by cyclic voltammetry (CV), chronoamperometry and
tested in a direct alkaline glycerol fuel cell (DGFC) by
electrochemical techniques. Micrographs results showed
that the ITO presence promotes a large agglomeration of
particles. Pd/C–ITO electrocatalysts showed peaks associated
with the face-centered cubic (fcc) structure of
palladium and several others peaks associated with ITO
used as support. Similar performance was found on all Pd/
C–ITO electrocatalysts where measurements in CV were
compared to Pd/C and Pd/ITO with Pd/C–ITO 50:50
chronoamperometry, presenting a better performance for
glycerol electro-oxidation. When using Pd/C–ITO 85:15
electrocatalyst and 1.0 mol L 1 glycerol at 908C, the
maximum power density found was 2,1 times higher than
that obtained using Pd/C and Pd/CITO electrocatalysts.
Therefore, the physical mixture of ITO and carbon, to be
used as a support improves the electrocatalytic activity for
glycerol oxidation reaction.
Como referenciar
OTTONI, CRISTIANE A.; SOUZA, RODINEY R. de; SILVA, SIRLANE G. da; SPINACE, ESTEVAM V.; SOUZA, RODRIGO F.B. de; OLIVEIRA NETO, ALMIR. Performance of Pd electrocatalyst supported on a physical mixture indium Tin oxide–carbon for glycerol electro– oxidation in alkaline media. Electroanalysis, v. 29, p. 1-6, 2017. DOI: 10.1002/elan.201600569. Disponível em: http://repositorio.ipen.br/handle/123456789/27194. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.