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Journal of Solid State Electrochemistry

, Volume 17, Issue 4, pp 1021–1028 | Cite as

CNx-modified Fe3O4 as Pt nanoparticle support for the oxygen reduction reaction

  • Rongfang WangEmail author
  • Jingchun Jia
  • Hui Wang
  • Qizhao Wang
  • Shan Ji
  • Zhongqun Tian
Original Paper

Abstract

A novel electrocatalyst support material, nitrogen-doped carbon (CNx)-modified Fe3O4 (Fe3O4-CNx), was synthesized through carbonizing a polypyrrole-Fe3O4 hybridized precursor. Subsequently, Fe3O4-CNx-supported Pt (Pt/Fe3O4-CNx) nanocomposites were prepared by reducing Pt precursor in ethylene glycol solution and evaluated for the oxygen reduction reaction (ORR). The Pt/Fe3O4-CNx catalysts were characterized by X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The electrocatalytic activity and stability of the as-prepared electrocatalysts toward ORR were studied by cyclic voltammetry and steady-state polarization measurements. The results showed that Pt/Fe3O4-CNx catalysts exhibited superior catalytic performance for ORR to the conventional Pt/C and Pt/C-CNx catalysts.

Keywords

Electrocatalysts PEMFC ORR Platinum Iron oxide 

Notes

Acknowledgments

We are really appreciated the National Natural Science Foundation of China (21163018), the National Science Foundation for Post-doctoral Scientists of China (20110490847, 2012 T50554), Guangdong Key Lab for Fuel Cell Technology, and the South African NRF (SUR 2008060900021) for financially supporting this work.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Rongfang Wang
    • 1
    • 3
    Email author
  • Jingchun Jia
    • 1
  • Hui Wang
    • 1
  • Qizhao Wang
    • 1
  • Shan Ji
    • 2
  • Zhongqun Tian
    • 3
  1. 1.Key Laboratory of Eco-environment-Related Polymer Materials, Ministry of Education of ChinaKey Laboratory of Gansu Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal UniversityLanzhouChina
  2. 2.HySA Systems Competence CentreSouth African Institute for Advanced Materials Chemistry, University of the Western CapeCape TownSouth Africa
  3. 3.State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of ChemistryXiamen UniversityXiamenChina

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