title: Nitrogen-Doped Carbon Vesicles with Dual Iron-Based Sites for Efficient Oxygen Reduction.
abstract: A nitrogen-doped vesicle-like porous carbon with well-integrated dual iron-based catalytic sites was developed through direct pyrolysis of inexpensive and abundant precursors. Benefiting from the mesoporous structures with synchronous construction of Fe-Nxand Fe/Fe3C@NC sites, the optimized catalyst exhibited outstanding performance for the oxygen reduction reaction (ORR) in alkaline media, even superior to the commercial Pt/C catalyst. Detailed characterizations revealed that Fe/Fe3C@NC sites can make major catalytic contributions in basic media, whereas the Fe-Nxsites were found to play an indispensable role for ORR in acidic media.
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Qianru
authors.initials: Q
authors.lastname: Li
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Gang
authors.initials: G
authors.lastname: Wan
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Han
authors.initials: H
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Linyu
authors.initials: L
authors.lastname: Pan
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Wanpeng
authors.initials: W
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Xiangzhi
authors.initials: X
authors.lastname: Cui
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics,Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai, 200050, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
authors.forename: Hangrong
authors.initials: H
authors.lastname: Chen
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D007501:Iron / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009584:Nitrogen / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D016062:Porosity
chemical_list: D002244:Carbon; D007501:Iron; D009584:Nitrogen; D010100:Oxygen
keywords: carbide; electrocatalyst; iron; mesoporous; oxygen reduction reaction