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Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (05): 1007.doi: 10.3969/j.issn.0251-0790.2012.05.025

• Physical Chemistry • Previous Articles     Next Articles

Electrocatalytic Performance of Cathodic Ir-Fe/C Catalyst in Direct Methanol Fuel Cell

GUO Qi1, LI Lin-Ru2, LU Liang2, JI Yun2, LU Tian-Hong2   

  1. 1. School of Life Science and Chemistry, Jiangsu Institute of Education, Nanjing 210013, China;
    2. Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China
  • Received:2011-11-07 Online:2012-05-10 Published:2012-05-10

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Abstract: Ir-Fe/C catalyst was prepared. The electrocatalytic activity of the Ir-Fe/C catalyst for the oxygen reduction and its methanol tolerance ability were investigated, based on the characterization with X-ray diffractometer(XRD) and energy dispersive spectrometer(EDS). The results show that the onset potentials of the oxygen reduction at the Ir/C and Ir-Fe/C catalyst electrodes are 0.57 and 0.65 V, respectively, and the current densities at 0.2 V are 4.6 and 5.8 mA/cm2, respectively. It indicates that the electrocatalytic activity of the Ir-Fe/C catalyst for the oxygen reduction is better than that of the Ir/C catalyst. In addition, the Ir-Fe/C catalyst possesses the high methanol tolerance ability. These results lay a strong basis for the use of the Ir-Fe/C cathodic catalyst in direct methanol fuel cell(DMFC).

Key words: Carbon supported Ir-Fe catalyst, Methanol oxidation, Methanol tolerance ability, Direct methanol fuel cell(DMFC)

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