文献类型：期刊文献

英文题名：A metal-organic framework-derived Fe-N-C electrocatalyst with highly dispersed Fe-Nx towards oxygen reduction reaction

作者：Zhang, Xiangkun[1];Huang, Xiaobo[1];Hu, Wenhui[1];Huang, Yongmin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2019

卷号：44

期号：50

起止页码：27379

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20193807442680);WOS:【SCI-EXPANDED(收录号:WOS:000493220000018)】；

基金：This work was provided by the National Natural Science Foundation of China (No. 21476071) and Research Centre of Analysis and Test of East China University of Science and Technology.

语种：英文

外文关键词：Electrocatalysts; Fuel cells; Metal-organic frameworks; Oxygen reduction reaction

摘要：Metal and nitrogen co-doped catalysts have been promising alternatives to platinum group metal (PGM) catalysts for oxygen reduction reaction (ORR) over the past few decades. Herein, we have synthesized an efficient Fe-N-C catalyst by the co-calcination of NH2-MIL-101@PDA and melamine. The best Fe-N-C shows a positive half-wave potential of 0.844 V, which is 14 mV higher than that of Pt/C catalyst, as well as superior methanol resistance and long-term durability in alkaline electrolyte. In addition, Fe-N-C also exhibits pronounced catalytic activity and a direct 4e(-) reaction pathway in acid electrolyte. We ascribed the excellent ORR performance of Fe-N-C to its crumpled structure, large specific surface area (584.6 m(2) g(-1)) and high content of Fe-Nx sites (1.22 at. %). This study provides a simple way for the fabrication of excellent PGM-free ORR catalysts. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.