Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (09): 2141-2147.doi: 10.3866/PKU.WHXB20110809

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Effect of the Reduction Heat-Treatment Condition on the Performance of Pt-Fe/C Alloy Catalyst

FU Rong1,2, ZHENG Jun-Sheng1,3, WANG Xi-Zhao1,3, MA Jian-Xin1,3   

  1. 1. Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), Shanghai 201804, P. R. China;
    2. School of Resource and Environment Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China;
    3. School of Automotive Studies, Tongji University (Jiading Campus), Shanghai 201804, P. R. China
  • Received:2011-04-01 Revised:2011-05-16 Published:2011-08-26
  • Contact: ZHENG Jun-Sheng, MA Jian-Xin;
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21006073), Shanghai Rising-Star Program, China(11QA1407200) and Shanghai Leading Academic Discipline Project, China (B303).

Abstract: Pt-Fe/C catalyst for proton exchange membrane fuel cell (PEMFC) was prepared by a pulse-microwave assisted chemical reduction heat-treatment synthesis method. The elemental content was tested by inductively coupled plasma (ICP). The microstructure and morphology of the as-prepared catalyst were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The electrocatalytic performance was measured by cyclic voltammetry (CV). The results indicate that pulse-microwave assisted chemical reduction heat-treatment synthesis is an efficient method for preparing PEMFC catalysts while the temperature and time of heat treatment greatly affect the size and activity of the Pt-Fe nanoparticles. For a heating temperature of 500 °C and a time of 3 h the Pt-Fe nanoparticles were uniform in size. Moreover, the Pt-Fe/C-500-3h alloy catalyst was highly dispersed on the surface of the carbon support and the TEM and XRD showed that the average Pt-Fe nanoparticle size was 1.8 nm. The electrochemical measurements show that the electrochemical surface area (ESA) of the catalyst was 55.14 m2·g-1.

Key words: Pulse-microwave assisted chemical reduction, Fuel cell, Pt-Fe/C catalyst


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