Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/139325
Title: Graphene layers‐wrapped Fe/Fe5C2 nanoparticles supported on n‐doped graphene nanosheets for highly efficient oxygen reduction
Authors: Hu, Enlai
Yu, Xin-Yao
Chen, Fang
Wu, Yadan
Hu, Yong
Lou, David Xiong Wen
Keywords: Engineering::Chemical engineering
Issue Date: 2017
Source: Hu, E., Yu, X.-Y., Chen, F., Wu, Y., Hu, Y., & Lou, D. X. W. (2018). Graphene layers‐wrapped Fe/Fe5C2 nanoparticles supported on n‐doped graphene nanosheets for highly efficient oxygen reduction. Advanced Energy Materials, 8(9), 1702476-. doi:10.1002/aenm.201702476
Journal: Advanced Energy Materials
Abstract: Synthesis of highly efficient nonprecious metal electrocatalysts for the oxygen reduction reaction (ORR) superior to platinum (Pt) is still a big challenge. Herein, a new highly active ORR electrocatalyst is reported based on graphene layers-wrapped Fe/Fe5C2 nanoparticles supported on N-doped graphene nanosheets (GL-Fe/Fe5C2/NG) through simply annealing a mixture of bulk graphitic carbon nitride (g-C3N4) and ferrocene. An interesting exfoliation–denitrogen mechanism underlying the conversion of bulk g-C3N4 into N-doped graphene nanosheets is revealed. Owing to the high graphitic degree, optimum N-doping level and sufficient active sites from the graphene layers-wrapped Fe/Fe5C2 nanoparticles, the as-prepared GL-Fe/Fe5C2/NG electrocatalyst obtained at 800 °C exhibits outstanding ORR activity with a 20 mV more positive half-wave potential than the commercial Pt/C catalyst in 0.1 m KOH solution and a comparable onset potential of 0.98 V. This makes GL-Fe/Fe5C2/NG an outstanding electrocatalyst for ORR in alkaline solution.
URI: https://hdl.handle.net/10356/139325
ISSN: 1614-6832
DOI: 10.1002/aenm.201702476
Rights: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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