文献类型：期刊文献

英文题名：Synergistic heat treatment derived hollow-mesoporous-microporous Fe-N-C-SHT electrocatalyst for oxygen reduction reaction

作者：Jiang, Tao[1];Luan, Weiling[1];Ren, Yufeng[1];Fan, Chenyao[2];Feng, Qi[2];Turyanska, Lyudmila[3]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety MOE, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]SAIC Motorcycle Co, Prospect Technol Dept, Shanghai 201800, Peoples R China;[3]Univ Nottingham, Fac Engn, Univ Pk, Nottingham NG7 2RD, England

年份：2020

卷号：305

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20202508857007);WOS:【SCI-EXPANDED(收录号:WOS:000551659900059)】；

基金：This work was financially supported by SAIC Group Co., Ltd., Passenger Vehicle Company, Department of Prospective Technology (Contract No. 4900070369).

语种：英文

外文关键词：Hollow-mesoporous-microporous; Synergistic heat treatment; Fe-N-C; Oxygen reduction reaction; Catalyst

摘要：Exploring an economical and efficient oxygen reduction reaction (ORR) is an essential but challenging field of study. Metal-organic frameworks (MOFs) have emerged as promising candidates for the preparation of porous catalysts. Here we propose a synergistic heat treatment (SHT) method to synthesize Fe-N-C-SHT catalyst with hierarchical porous hollow structures via a simple carbonization method by the synergistic heating of ZIF-8-Fe (ZIF-8 doped with Fe) and ZIF-67 in a tube furnace. Fe-N-C-SHT catalyst displays efficient ORR activity (half-wave potential (E-half) = 0.88 V versus reversible hydrogen electrode (RHE) with a loading of 0.204 mg(Fe-N-C-SHT)cm(-2)), which is superior to that of Fe-N-C synthesized using individual heat treatment (IHT) (E-half = 0.84 V) and Pt/C catalyst (E-half = 0.86 V). We achieve enhanced catalytic properties, enhanced methanol tolerance, and long-term durability of the Fe-N-C-SHT catalyst in alkaline electrolyte. The improved ORR activity is attributed to the synergistic effect of Fe doping and optimized SHT methodology, which led to the formation of a highly porous catalyst with numerous active sites. The developed SHT method presents a novel route to fabricate Fe-N-C catalysts with hollow-mesoporous-microporous structures and high performance in ORR.