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Issue 41, 2017
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Facile fabrication of CuO microcube@Fe–Co3O4 nanosheet array as a high-performance electrocatalyst for the oxygen evolution reaction

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Abstract

A “top-down” tactic was offered to synthesize highly efficient electrocatalysts for the oxygen evolution reaction (OER), in which a CuO microcube supported Fe doped Co3O4 nanosheet composite was obtained using a facile unipolar pulse electrodeposition (UPED) method combined with a thermal treatment method. Specifically, an Fe doped Co(OH)2 shell was electrodeposited on the electrode with a Cu particle core simultaneously. Interestingly, it is found that Fe–Co(OH)2 nanosheets grew around the Cu particle core. As a result, a novel electrocatalyst with the Cu cube core and the Fe–Co(OH)2 nanosheet shell was successfully formed in one step. After subsequent thermal oxidation treatment, the CuO microcube@Fe–Co3O4 nanosheet core–shell composite was obtained on the electrode. Benefiting from the one-step electrodeposition, the composite electrode with a smart 3D hierarchical structure as well as the intrinsic activity of Fe–Co3O4 nanosheets showed a remarkably enhanced catalytic performance for OER, which revealed a low overpotential of 232 mV at 10 mA cm−2 current density.

Graphical abstract: Facile fabrication of CuO microcube@Fe–Co3O4 nanosheet array as a high-performance electrocatalyst for the oxygen evolution reaction

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Publication details

The article was received on 22 Jun 2017, accepted on 19 Sep 2017 and first published on 19 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA05454H
Citation: J. Mater. Chem. A, 2017,5, 21740-21749
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    Facile fabrication of CuO microcube@Fe–Co3O4 nanosheet array as a high-performance electrocatalyst for the oxygen evolution reaction

    X. Li, C. Li, A. Yoshida, X. Hao, Z. Zuo, Z. Wang, A. Abudula and G. Guan, J. Mater. Chem. A, 2017, 5, 21740
    DOI: 10.1039/C7TA05454H

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