Synthesis of Fe-doped carbon hybrid composed of CNT/flake-like carbon for catalyzing oxygen reduction  

作　　者：Fangfang Tang Wei Xia Hongjuan Zhang Lingling Zheng Yingji Zhao Jianping Ge Jing Tang 

机构地区：[1]School of Chemistry and Molecular Engineering,Shanghai Key Laboratory of Green Chemistry and Chemical Processes,East China Normal University,Shanghai 200062,China [2]Department of Nanoscience and Nanoengineering,Faculty of Science and Engineering,Waseda University,Shinjuku,Tokyo 169-8555,Japan [3]JST-ERATO Yamauchi Materials Space-Tectonics Project,Kagami Memorial Research Institute for Materials Science and Technology,Waseda University,Shinjuku,Tokyo 169-0051,Japan [4]Institute of Eco-Chongming,Shanghai 202162,China

出　　处：《Nano Research》2022年第7期6670-6677,共8页纳米研究（英文版）

基　　金：The authors acknowledge the financial support from the National Natural Science Foundation of China(No.22005099);sponsored by Shanghai Pujiang Program(No.19PJ1402500)and Fundamental Research Funds for the Central Universities.

摘　　要：Carbon-based materials with tunable properties have emerged as promising candidates to replace Pt-based catalysts for accelerating oxygen reduction reaction(ORR)in fuel cells or metal-air batteries.In this work,we constructed a carbon hybrid which consists of one-dimensional(1D)carbon nanotubes and flake-like carbons by pyrolysis of leaf-like metal-organic frameworks.The optimal hybrid electrocatalyst of Fe_(7%)-L-CNT-900 possesses the desired features for ORR,including active Fe species,high degree of graphitization,large specific surface area,and hierarchical porous structures.Consequently,Fe_(7%)-L-CNT900 performs a high electrocatalytic activity for ORR with a half-wave potential of 0.88 V,which is comparable to that of Pt/C(20 wt.%).This strategy provides an insight into the investigation of highly efficient and low-cost composite electrocatalyst for oxygen reduction reaction.

关 键 词：metal-organic frameworks porous carbon/CNT composites Fe-based active sites ELECTROCATALYST oxygen reduction reaction 

分 类 号：TB3[一般工业技术—材料科学与工程]