Binary and ternary palladium based electrocatalysts for alkaline direct glycerol fuel cell
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2015
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Journal of Power Sources
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Pd/C, PdAu/C 50:50, PdSn/C 50:50, PdAuSn/C 50:40:10 and PdAuSn/C 50:10:40 electrocatalysts are
prepared using an electron beam irradiation reduction method and tested for glycerol electro-oxidation
in alkaline medium. X-Ray diffraction (XRD), Energy dispersive X-ray analysis (EDX), Transmission
electron Microscopy (TEM) and Cyclic Voltammetry (CV) are used to characterize the resulting materials.
The activity for glycerol electro-oxidation is tested in alkaline medium at room temperature using Cyclic
Voltammetry and Chronoamperometry (CA) and in a single alkaline direct glycerol fuel cell (ADGFC) at
temperature range of 60e90 C. EDX analysis demonstrate that Pd:Au:Sn atomic ratios are very similar to
the nominal ones. X-ray diffractograms of PdAuSn/C electrocatalysts evidence the presence of Pd (fcc), Au
(fcc) and SnO2 phases. TEM analysis demonstrates a good dispersion of the nanoparticles on the carbon
support with some agglomerates. Cyclic Voltammetry experiments suggest that PdAuSn/C electrocatalysts demonstrate better results. In single fuel cell tests, at 85 C, using 2.0 mol L 1 glycerol in
2.0 mol L 1 KOH solutions, the electrocatalyst PdAuSn/C 50:40:10 demonstrate highest power density
(51 mW cm 2
) and the 120 h durability tests demonstrate a 210 mV h 1 degradation rate.
Como referenciar
GERALDES, ADRIANA N.; SILVA, DIONISIO F. da; ANDRADE e SILVA, LEONARDO G. de; SPINACE, ESTEVAM V.; OLIVEIRA NETO, ALMIR; SANTOS, MAURO C. dos. Binary and ternary palladium based electrocatalysts for alkaline direct glycerol fuel cell. Journal of Power Sources, v. 293, p. 823-830, 2015. DOI: 10.1016/j.jpowsour.2015.06.010. Disponível em: http://repositorio.ipen.br/handle/123456789/25332. Acesso em: 10 May 2024.
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.