In-situ growth of ZnS/FeS heterojunctions on biomass-derived porous carbon for efficient oxygen reduction reaction

作     者：Rong Jiang Xin Chen Jinxia Deng Tianyu Wang Kang Wang Yanli Chen Jianzhuang Jiang Rong Jiang;Xin Chen;Jinxia Deng;Tianyu Wang;Kang Wang;Yanli Chen;Jianzhuang Jiang

作者机构：Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsDepartment of ChemistryUniversity of Science and Technology BeijingBeijing 100083China School of Materials Science and EngineeringChina University of Petroleum(East China)Qingdao 266580ShandongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2020年第29卷第8期

页      面：79-85,I0003页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：Financial support from the National Natural Science Foundation of China (Nos.21631003,21771192,and 21871024) the Fundamental Research Funds for the Central Universities (No.FRF-BR-18–009B) 

主　　题：Heterojunction Oxygen reduction reaction Photo-responsive electrocatalyst Biomass-derived carbon 

摘      要：It is an urgent task to develop highly efficient non-noble metal electrocatalysts in the direction of ORR,but still a huge and long-term ***,an efficient one-step pyrolysis of Sichuan pepper powder,2,2-bipyridine,FeCl3,Na SCN,and ZnCl2 at 900℃ provides the FeS/ZnS@N,S-C-900 hybrid *** electron microscopy(TEM)images and Mott-Schottky curves clearly reveal the in-situ constructed abundant FeS/ZnS-based p-n junctions dispersed on the biomass-derived porous carbon surface of FeS/ZnS@N,*** as-prepared FeS/ZnS@N,S-C-900 hybrid exhibits superior ORR performance in comparison with Pt/C in 0.1 M KOH with high onset(Eonset)and half-wave potentials(E1/2)of 1.00 and 0.880 V ***,large limiting current density(JL)of 5.60 mA cm-2,and robust durability and methanol ***,upon the light irradiation,FeS/ZnS@N,S-C-900 produces a photocurrent as high as ca.0.3μA cm-2,resulting in further improvement over Eonset,E1/2,and JLof FeS/ZnS@N,S-C-900 to1.10 V ***,0.885 V ***,and 6.02 mA *** in combination with theoretical calculations demonstrate the significant effect of FeS/ZnS heterojunction on the enhanced ORR catalytic activity of FeS/ZnS@N,*** work is useful for the development of advanced heterojunction-based ORR catalysts for various energy conversion devices.