Wang, RongfangJia, JingchunWang, HuiWang, QizhaoJi, ShanTian, Zhongqun2018-02-022018-02-022013Wang, R. et al. (2013). CNx-modified Fe3O4 as Pt nanoparticle support for the oxygen reduction reaction. Journal of Solid State Electrochemistry, 17: 1021 – 1028.1432-8488http://dx.doi.org/10.1007/s10008-012-1948-4http://hdl.handle.net/10566/3466A novel electrocatalyst support material, nitrogendoped 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.enThis is the author-version of the article published online at: http://dx.doi.org/10.1007/s10008-012-1948-4ElectrocatalystsPEMFCORRPlatinumIron oxideArticle