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Citation: YANG Yong, ZHAO Wenwen, SHI Qingle, ZHANG Hua. Preparation of Platinum-hydrogen Tungsten Bronze Anodes by Electrochemical Reduction[J]. Chinese Journal of Applied Chemistry, ;2011, 28(12): 1408-1414. doi: 10.3724/SP.J.1095.2011.00758 shu

Preparation of Platinum-hydrogen Tungsten Bronze Anodes by Electrochemical Reduction

1.
College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009

Corresponding author: ZHANG Hua,
Received Date: 24 December 2010
Available Online: 23 April 2011
Fund Project:

Anodes of proton exchange membrane fuel cell with the platinum-hydrogen tungsten bronze(HxWO₃) as the composite catalysts were prepared by electrochemical reduction on carbon cloth.The catalysts were characterized by XRD,SEM,EIS and single-cell polarization tests.The results showed that the order of electrochemical reduction had a major impact on the morphology and dispersion of the catalysts.The composite catalyst of HxWO₃/Pt exhibited synergistic catalytic effect and increased the catalytic activity for hydrogen oxidation.The HxWO₃/Pt catalyst showed the highest catalytic activity for hydrogen oxidation,while the Pt-HxWO₃ catalyst showed the lowest catalytic activity.Because of the coexistence of two electrolytes,less hydrogen tungsten bronze catalyst was deposited on the electrode and platinum agglomerated obviously on the Pt-HxWO₃ electrodes,leading to a decrease of the catalytic activity.
- electrochemical reduction,
- hydrogen tungsten bronze,
- anode,
- proton exchange membrane fuel cell
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