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Issue 3, 2018
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Nitrogen/sulfur dual-doped reduced graphene oxide supported CuFeS2 as an efficient electrocatalyst for the oxygen reduction reaction

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Abstract

At present, low-cost and efficient electrocatalysts for accelerating the oxygen reduction reaction in fuel cells are highly desired. In this work, we report a facile approach to fabricate nanostructured CuFeS2 that is supported on nitrogen/sulfur dual-doped reduced graphene oxide (NS-rGO). The chemical composition and surface morphology of CuFeS2/NS-rGO are characterized using X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. Cyclic voltammetry, linear sweep voltammetry and chronoamperometry are used to evaluate the electrochemical activity and durability of the CuFeS2/NS-rGO catalysts in alkaline media. CuFeS2/NS-rGO-2 (CuFeS2/GO theoretical mass ratio is 2.8) shows much superior methanol tolerance and better stability than the commercial Pt/C catalyst. The catalyzed reaction follows a desirable four-electron pathway in alkaline electrolytes. Therefore, CuFeS2/NS-rGO-2 can be used as a promising low cost nonprecious metal electrocatalyst for fuel cells and metal–air batteries in future.

Graphical abstract: Nitrogen/sulfur dual-doped reduced graphene oxide supported CuFeS2 as an efficient electrocatalyst for the oxygen reduction reaction

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Publication details

The article was received on 25 Aug 2017, accepted on 22 Dec 2017 and first published on 26 Dec 2017


Article type: Paper
DOI: 10.1039/C7NJ03204H
Citation: New J. Chem., 2018,42, 2081-2088
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    Nitrogen/sulfur dual-doped reduced graphene oxide supported CuFeS2 as an efficient electrocatalyst for the oxygen reduction reaction

    M. Zhang, W. Hong, R. Xue, L. Li, G. Huang, X. Xu, J. Gao and J. Yan, New J. Chem., 2018, 42, 2081
    DOI: 10.1039/C7NJ03204H

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