Nitrogen-Doped Carbon Vesicles with Dual Iron-Based Sites for Efficient Oxygen Reduction

Qianru Li; Gang Wan; Han Zhao; Linyu Pan; Ning Wang; Wanpeng Zhao; Xiaoxia Zhou; Xiangzhi Cui; Hangrong Chen

doi:10.1002/cssc.201601396

Nitrogen-Doped Carbon Vesicles with Dual Iron-Based Sites for Efficient Oxygen Reduction

ChemSusChem. 2017 Feb 8;10(3):499-505. doi: 10.1002/cssc.201601396. Epub 2017 Jan 4.

Authors

Qianru Li^{1

2}, Gang Wan^{1

2}, Han Zhao^{1

2}, Linyu Pan^{1

2}, Ning Wang^{1

2}, Wanpeng Zhao^{1

2}, Xiaoxia Zhou^{1

2}, Xiangzhi Cui^{1

2}, Hangrong Chen^{1

2}

Affiliations

¹ 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.
² University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

PMID: 27863101
DOI: 10.1002/cssc.201601396

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-N_x and Fe/Fe₃ C@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/Fe₃ C@NC sites can make major catalytic contributions in basic media, whereas the Fe-N_x sites were found to play an indispensable role for ORR in acidic media.

Keywords: carbide; electrocatalyst; iron; mesoporous; oxygen reduction reaction.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon / chemistry*
Catalysis
Electrochemistry
Electrodes
Iron / chemistry*
Models, Molecular
Molecular Conformation
Nitrogen / chemistry*
Oxidation-Reduction
Oxygen / chemistry*
Porosity

Substances

Carbon
Iron
Nitrogen
Oxygen