Influence of Fe on electrocatalytic activity of iron-nitrogendoped carbon materials toward oxygen reduction reaction

作     者：Lin LI Cehuang FU Shuiyun SHEN Fangling JIANG Guanghua WEI Junliang ZHANG Lin LI;Cehuang FU;Shuiyun SHEN;Fangling JIANG;Guanghua WEI;Junliang ZHANG

作者机构：Institute of Fuel CellsSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China SJTU-ParisTech Elite Institute of TechnologyShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Frontiers in Energy》 (能源前沿（英文版）)

年 卷 期：2022年第16卷第5期

页      面：812-821页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：funded by the National Natural Science Foundation of China(Grant Nos.21533005 and 21802095) the National Key R&D Program of China(2016YFB0101201) 

主　　题：oxygen reduction reaction Fe-N-C active sites Fe addition second heat treatment 

摘      要：The development of highly active nitrogendoped carbon-based transition metal(M-N-C)compounds for the oxygen reduction reaction(ORR)in proton exchange membrane fuel cells(PEMFCs)greatly helps reduce fuel cell cost,thus rapidly promoting their commercial *** different M-N-C electrocatalysts,the series of Fe-N-C materials are highly favored because of their high ORR ***,there remains a debate on the effect of Fe,and rare investigations focus on the influence of Fe addition in the second heat treatment usually performed after acid leaching in the catalyst *** is thus very critical to explore the influences of Fe on the ORR electrocatalytic activity,which will,in turn,guide the design of Fe-N-C materials with enhanced ***,a series of Fe-N-C electrocatalysts are synthesize and the influence of Fe on the ORR activity are speculated both experimentally and *** is deduced that the active site lies in the structure of Fe-N4,accompanied with the addition of appropriate Fe,and the number of active sites increases without the occurrence of agglomeration ***,it is speculated that Fe plays an important role in stabilizing N as well as constituting active sites in the second pyrolyzing process.