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

Authors :: Li Q
Wan G
Zhao H
Pan L
Wang N
Zhao W
Zhou X
Cui X
Chen H
Source :: ChemSusChem [ChemSusChem] 2017 Feb 08; Vol. 10 (3), pp. 499-505. Date of Electronic Publication: 2017 Jan 04.
Publication Year :: 2017
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 <subscript>x</subscript> and Fe/Fe <subscript>3</subscript> 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/Fe <subscript>3</subscript> C@NC sites can make major catalytic contributions in basic media, whereas the Fe-N <subscript>x</subscript> sites were found to play an indispensable role for ORR in acidic media.<br /> (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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

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