CHEN Ling, LI Jingjing, LUAN Xiaodong, YE Feng, WANG Xindong. Electrocatalytic activity of DMFC PtSn/C catalyst for methanol oxidation[J]. Chinese Journal of Engineering, 2007, 29(10): 1019-1022. DOI: 10.13374/j.issn1001-053x.2007.10.012
Citation: CHEN Ling, LI Jingjing, LUAN Xiaodong, YE Feng, WANG Xindong. Electrocatalytic activity of DMFC PtSn/C catalyst for methanol oxidation[J]. Chinese Journal of Engineering, 2007, 29(10): 1019-1022. DOI: 10.13374/j.issn1001-053x.2007.10.012

Electrocatalytic activity of DMFC PtSn/C catalyst for methanol oxidation

  • The PtSn/C catalyst was prepared by the low-temperature solid phase reaction method. X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM) were used to characterize the crystallinity and particle size of the catalyst. The results indicate that the PtSn/C and Pt/C catalyst prepared by the same low-temperature solid phase reaction method both have platinum fcc structure. The addition of Sn can increase the lattice parameter of Pt. Compared with the Pt/C catalyst prepared by the same method, the PtSn/C catalyst shows a higher dispersion and a smaller particle size and its mean particle size is about 4.8 nm, therefore the PtSn/C catalyst has a higher active specific surface area. The results of electrochemical measurements demonstrate that the PtSn/C catalyst has a better electrocatalytic activity for the methanol oxidation than Pt/C catalyst.
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