文献类型：期刊文献

英文题名：Fluorine and nitrogen co-doped ordered mesoporous carbon as a metal-free electrocatalyst for oxygen reduction reaction

作者：Wang, Haiwen[1];Ding, Junjie[1];Zhang, Jiao[1];Wang, Chenfei[1];Yang, Wenlong[2];Ren, Hongxin[1];Kong, Aiguo[3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Peking Univ, Dept Mat Sci & Engn, Beijing 100871, Peoples R China;[3]East China Normal Univ, Dept Chem, Shanghai 200241, Peoples R China

年份：2016

卷号：6

期号：83

起止页码：79928

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20163602773666);WOS:【SCI-EXPANDED(收录号:WOS:000382539600074)】；

基金：The authors would like to thank the Shanghai construction of college experiment technique team plan (YJ0114204) for financially supporting this work.

语种：英文

外文关键词：Fluorine compounds - Atoms - Electrocatalysts - Mesoporous materials - Catalyst activity - Electrolytic reduction - Fluorine - Oxygen

摘要：Fluorine and nitrogen co-doped ordered mesoporous carbon (FN-OMC) is synthesized by a hard template method employing inexpensive resorcin as a carbon precursor and ammonium fluoride as a fluorine and nitrogen source. Considerable fluorine and nitrogen atoms (F: 0.35 at%, N: 2.25 at%) are homogeneously implanted in the graphitic carbon matrix with high surface area (671.3 cm(2) g(-1)) and ordered mesoporous channels (6.2 nm). The FN-OMC prepared at the optimized heat-treatment temperature (1000 degrees C) exhibits a high catalytic activity (E-onset: -0.07 V, E-1/2: -0.19 V, current density: 5.83 mA cm(-2)) for oxygen reduction reaction (ORR) comparable to commercial platinum-carbon (Pt-C, 20 wt%) catalysts, but better stability and methanol-tolerance in alkaline solutions. The synergistic effect of fluorine and nitrogen atoms in carbon frameworks is demonstrated to sharply polarize adjacent carbon atoms and facilitate the formation of defect-induced active sites for ORR.