文献类型：期刊文献

英文题名：Enriched graphitic N-doped carbon-supported Fe3O4 nanoparticles as efficient electrocatalysts for oxygen reduction reaction

作者：Su, Yunhe[1];Jiang, Hongliang[1];Zhu, Yihua[1];Yang, Xiaoling[1];Shen, Jianhua[1];Zou, Wenjian[1];Chen, Jianding[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2014

卷号：2

期号：20

起止页码：7281

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20141817680669);WOS:【SCI-EXPANDED(收录号:WOS:000334998400022)】；

基金：This work was supported by the National Natural Science Foundation of China (21236003, 21206042, 20925621, and 21176083), the Basic Research Program of Shanghai (13NM1400700, 13NM1400701), the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Hybrid composites - Nanoparticles - Carbonization - Manganese oxide - Magnetite - Oxygen - Electrolytic reduction - Carbon - Transition metals - Cobalt compounds - Electrocatalysts - Catalyst activity - Doping (additives)

摘要：Graphitic N is proposed to be one of the most likely active sites for the oxygen reduction reaction (ORR) in N-doped carbon materials. However, the recent hybrid composites consisting of N-doped carbons and transition metal oxides for the ORR are predominantly pyridinic N-and pyrrolic N-doped carbon-supported cobalt or manganese oxides. Here, an enriched graphitic N-doped carbon-supported Fe3O4 nanoparticles composite was prepared via a solvothermal carbonization process. The hybrid composite exhibits a similar high catalytic activity with the 4e(-) reaction pathway but superior stability to Pt/C for the ORR in alkaline media. Furthermore, the composite also shows a better ORR performance than previously reported transition metal oxides-based N-doped carbon hybrid composites. The unusual high catalytic activity arises from the combination of the high surface area and the synergetic coupling effect between the enriched graphitic N-doped carbon and Fe3O4 nanoparticles.