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Issue 20, 2018
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Porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles for efficient oxygen reduction

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Abstract

The rational construction of a carbon base with a porous structure and incorporating effective dopants is an intriguing and challenging strategy used to develop advanced electrocatalysts for the oxygen reduction reaction (ORR). Herein, we synthesize a novel, efficient electrocatalyst comprised of three-dimensional (3D) porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles (Fe3O4/FeNSG). We use a melamine formaldehyde resin which plays the dual-functional roles of a soft template and a nitrogen-abundant source. The rational design of the Fe3O4/FeNSG-3 with its 3D porous architecture, abundant active sites (Fe–N–C, Fe3O4, pyridinic N, C–S–C, et al.), and large surface area (530.5 m2 g−1) makes it an efficient electrocatalyst towards ORR. The Fe3O4/FeNSG-3 catalyst shows a positive ORR onset potential (0.951 V) and half-wave potential (0.810 V), comparable to those of the commercial Pt/C electrocatalyst in alkaline media. Furthermore, the catalyst exhibits a four-electron transfer pathway, superior methanol tolerance and good stability. This work paves the way for preparing low-cost, active, stable, non-Pt group metal catalysts through regulating the active catalytic sites on 3D graphene with a porous architecture.

Graphical abstract: Porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles for efficient oxygen reduction

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Publication details

The article was received on 27 Jun 2018, accepted on 12 Sep 2018 and first published on 13 Sep 2018


Article type: Paper
DOI: 10.1039/C8CY01328D
Citation: Catal. Sci. Technol., 2018,8, 5325-5333
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    Porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles for efficient oxygen reduction

    Y. Li, Y. Zhou, C. Zhu, Y. H. Hu, S. Gao, Q. Liu, X. Cheng, L. Zhang, J. Yang and Y. Lin, Catal. Sci. Technol., 2018, 8, 5325
    DOI: 10.1039/C8CY01328D

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