PtAu Electrocatalyst for Glycerol Oxidation Reaction Using a ATR-FTIR/Single Direct Alkaline Glycerol/Air Cell In Situ Study

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• 作者：Cristiane Angélica Ottoni ; Sirlane G. da Silva ; Rodrigo F. B. De Souza…
• 关键词：PtAu/C electrocatalysts ; Alkaline fuel cell ; Glycerol
• 刊名：Electrocatalysis
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：7
• 期：1
• 页码：22-32
• 全文大小：2,785 KB
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• 作者单位：Cristiane Angélica Ottoni (1)
  Sirlane G. da Silva (1)
  Rodrigo F. B. De Souza (1)
  Almir Oliveira Neto (1)
  
  1. Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, CEP 05508-900, São Paulo, SP, Brazil
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Electrochemistry
  Physical Chemistry
  Energy Technology
  
• 出版者：Springer New York
• ISSN：1868-5994

文摘

Different ratios of PtAu/C electrocatalysts were synthesized and assessed for their capability by glycerol electrooxidation. Electrocatalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV), chronoamperometry, and direct glycerol/air fuel cell coupled with a ATR-FTIR setup. XRD of PtAu/C electrocatalysts showed the presence of Pt (fcc), Au (fcc), and PtAu (fcc) phases, and TEM images for PtAu/C electrocatalysts showed particle size between 5.4 and 5.8 nm. PtAu/C (50:50) presented the best result for glycerol electrooxidation by cyclic voltammetry and chronoamperommetry measurements in comparison with other electrocatalysts prepared. All PtAu/C showed better performance in comparison with Pt/C and Au/C. Moreover, the addition of gold to platinum favored glycerol by electronic effect and bifunctional mechanism. Through ATR-FTIR/direct alkaline glycerol/air cell in-situ study, it was possible to identify glycerate and tartronate as main products formed during the electrochemical glycerol oxidation. Keywords PtAu/C electrocatalysts Alkaline fuel cell Glycerol