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Porous graphene doped with Fe/N/S incorporated Fe3O4 nanoparticles for efficient oxygen reduction reaction

Abstract

Rational construction of carbon base with porous structure incorporated with effective dopants is an intriguing and challenging strategy to develop advanced electrocatalysts for oxygen reduction reaction (ORR). Herein, we synthesize a novel efficient electrocatalyst of three-dimensional (3D) porous graphene doped with Fe/N/S incorporated Fe3O4 nanoparticles (Fe3O4/FeNSG), using melamine formaldehyde resin playing the dual-functional roles of soft template and nitrogen-abundant source. Rational design of the Fe3O4/FeNSG-3 with 3D porous architecture, abundant of 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 much positive ORR onset potential (0.951 V) and half-wave potential (0.810 V), comparable to the commercial Pt/C in alkaline media. Furthermore, the catalyst exhibits a four-electron transfer pathway, superior methanol tolerance and stability. This work paves the way to prepare low-cost, active, and stable non-Pt group metal catalysts through regulating the catalytic active sites on 3D graphene with porous architecture.

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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, Accepted Manuscript
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    Porous graphene doped with Fe/N/S incorporated Fe3O4 nanoparticles for efficient oxygen reduction reaction

    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, Accepted Manuscript , DOI: 10.1039/C8CY01328D

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