Substitute of Expensive Pt with Improved Electrocatalytic Performance and Higher Resistance to CO Poisoning for Methanol Oxidation: the Case of Synergistic Pt-Co3O4 Nanocomposite

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• 作者：Hongxiao Zhao ; Zhi Zheng ; Jing Li ; Huimin Jia ; Ka-wai Wong&#8230
• 关键词：Pt ; Co3O4 nanocomposite ; MOR ; Electrocatalytic activity
• 刊名：Nano-Micro Letters
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：5
• 期：4
• 页码：296-302
• 全文大小：286KB
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• 作者单位：Hongxiao Zhao (19)
  Zhi Zheng (19)
  Jing Li (19)
  Huimin Jia (19)
  Ka-wai Wong (29)
  Yidong Zhang (19)
  Woon Ming Lau (29)
  
  19. Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, Xuchang University, Henan, 461000, China
  29. Chengdu Green Energy and Green Manufacturing R&D Center, Sichuan, 610207, China
  
• 刊物类别：Nanotechnology and Microengineering; Nanotechnology; Nanoscale Science and Technology;
• 刊物主题：Nanotechnology and Microengineering; Nanotechnology; Nanoscale Science and Technology;
• 出版者：Springer Berlin Heidelberg
• ISSN：2150-5551

文摘

In this paper, Pt-Co₃O₄ nanocomposite was synthesized by a sol-gel process combined with electrodeposition method. Its electrocatalytic activity towards methanol oxidation was investigated at room temperature using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and current density-time curve. It is found that the resultant Pt-Co₃O₄ catalysts with minute amount of Pt exhibite attractive electrocatalytic activity for methanol oxidation reaction (MOR) but with a high resistance CO poisoning due to the synergistic effects from Pt and Co₃O₄. Together with the low manufacturing cost of Co₃O₄, the reported nanostructured Pt-Co₃O₄ catalyst is expected to be a promising electrode material for direct methanol fuel cells (DMFC). Keywords Pt-Co₃O₄ nanocomposite MOR Electrocatalytic activity