Synthesis and Characterization of Eletrocatalyst Powders for Application in PEM Fuel Cells

Franco, Egberto Gomes; Aricó, Eliana Maria; Linardi, Marcelo; Roth, Christina; Martz, Nathalie; Fueß, H.

doi:10.4028/www.scientific.net/msf.416-418.4

Cited by 16 publications

(8 citation statements)

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“…In Brazil, the electrocatalysts produced by the Bönnemann method with binary, ternary and quaternary compositions have been studied at IPEN/CNEN-SP [44][45][46][47][48][49][50] (Instituto de Pesquisas Energéticas e Nucleares). Other methodologies of electrocatalysts preparation have also been studied and developed at IPEN/CNEN-SP [51][52][53][54][55] and IQSC/USP [56][57][58][59][60][61] (Instituto de Química de São Carlos, Universidade de São Paulo).…”

Section: The Bönnemann Methods 42mentioning

confidence: 99%

Electrocatalysis and electrocatalysts for low temperature fuel cells: fundamentals, state of the art, research and development

Wendt¹,

Spinacé²,

Neto³

et al. 2005

Quím. Nova

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Section: The Bönnemann Methods 42mentioning

confidence: 99%

Electrocatalysis and electrocatalysts for low temperature fuel cells: fundamentals, state of the art, research and development

Wendt¹,

Spinacé²,

Neto³

et al. 2005

Quím. Nova

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“…The cyclic voltammetric results revealed that the heat treated catalyst exhibited improved electroactivity. This heat treatment was carried out in a nitrogen/hydrogen atmosphere for 2 hours at 300 °C, followed by furnace cooling 13 . Another heat treatment was also carried out with the Bönnemam catalysts, which used oxidising and reducing atmospheres 14,15 at 300 °C.…”

Section: Electrochemical Investigationsmentioning

confidence: 99%

“…The Bönnemann´s method was selected for doping the carbon black (electrode material) with the electrocatalyst, in a modified manner 9 , which consisted of a colloidal system in a dry nitrogen atmosphere, and used anhydrous solvents and salts of the metals. The Bönnemann method gives a crystallite, with an average size between 1.5 to 3.0 nm, that is well dispersed in the carbon matrix 10 . The spontaneous deposition method was the other method, and consisted in the spontaneous deposition of a monolayer of platinum on the surface of the ruthenium support.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of PtRu/C catalysts obtained by colloidal and deposition methods for fuel cell applications

et al. 2005

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The purpose of this investigation was to compare catalysts produced by the Bönnemann -colloidal method (PtRu (B1) and PtRu (B2)), and those produced by the spontaneous deposition method (PtRu (SD)). The catalysts produced by both methods had good electrochemical behavior for methanol oxidation for proton exchange membrane fuel cell applications. The structure of the catalyst was examined by transmission electron microscopy (TEM). Energy dispersive spectroscopic analysis (EDS) was used to determine the semi-quantitative composition of the catalysts, and the electrochemical behavior was determined by cyclic voltammetry (CV). The diffractograms of the binary catalysts revealed platinum and ruthenium as the only crystalline phases, as per ICDD data base. The PtRu (B1) catalyst, treated in a reducing atmosphere, has the same structure as PtRu (B2), treated in an oxidising/reducing atmosphere, except that the crystallite size was around 1.7 nm for PtRu (B1) instead of 9.9 nm for PtRu (B2). The catalysts PtRu (B2) and PtRu (SD) showed similar cyclic voltammetric behavior, which was better than that of PtRu (B1). Both methods are suitable for the production of electrocatalysts for fuel cell applications. The colloidal method is more expensive than the deposition method, but the former permits the production of ternary and quaternary catalyst systems with enhanced CO tolerance.

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“…It is a common way to produce the catalysts with the colloidal method (Franco et al, 2003;Seger et al, 2008). Platinum-ruthenium (Pt-Ru) catalysts are effective electro-catalysts for CO tolerance and/or methanol oxidation in fuel cell applications, and Pt:Ru ratio has attracted increased research interest.…”

Section: Introductionmentioning

confidence: 99%

Deposition of platinum–ruthenium nano-particles on multi-walled carbon nano-tubes studied by gamma-irradiation

Zhang¹,

Ye²,

Wang³

et al. 2010

Radiation Physics and Chemistry

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Synthesis and Characterization of Eletrocatalyst Powders for Application in PEM Fuel Cells

Cited by 16 publications

References 0 publications

Electrocatalysis and electrocatalysts for low temperature fuel cells: fundamentals, state of the art, research and development

Electrocatalysis and electrocatalysts for low temperature fuel cells: fundamentals, state of the art, research and development

Synthesis and characterization of PtRu/C catalysts obtained by colloidal and deposition methods for fuel cell applications

Deposition of platinum–ruthenium nano-particles on multi-walled carbon nano-tubes studied by gamma-irradiation

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