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

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

Li Q1,2, Wan G1,2, Zhao H1,2, Pan L1,2, Wang N1,2, Zhao W1,2, Zhou X1,2, Cui X1,2, Chen H1,2.

Author information

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.

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-Nx 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-Nx sites were found to play an indispensable role for ORR in acidic media.

KEYWORDS:

carbide; electrocatalyst; iron; mesoporous; oxygen reduction reaction

PMID:
27863101
DOI:
10.1002/cssc.201601396
[Indexed for MEDLINE]

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