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Issue 40, 2017
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Hollow FeNi-based hybrid polyhedron derived from unique sulfur-modulating coordinated transition bimetal complexes for efficient oxygen evolution reactions

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Abstract

Despite the significant progress in the preparation of hollow structures, it is a challenge to build high-quality complex hollow structures with controllable morphology, particularly for multicomponent materials. Herein, a facile strategy was first developed to tune the morphology of coordinated transition bimetal complexes via controlling the growth rates of {111} and {100} facets using sulfur as a morphological modulator and template-engaged pyrolysis to form a unique hollow polyhedron (S–FeNi@NC). By virtue of the structural and compositional features, the optimized S–FeNi@NC hollow cuboctahedron shows excellent activities with a remarkably small overpotential of 272 mV to reach 20 mA cm−2, a lower Tafel slope with 84 mA dec−1, and an excellent durability without degradation after 5000 CV cycles toward oxygen evolution reaction (OER) in an alkaline medium. The strategy developed here provides a new path to prepare hollow transition metal hybrids with a tunable polyhedral structure for catalysis and energy conversion.

Graphical abstract: Hollow FeNi-based hybrid polyhedron derived from unique sulfur-modulating coordinated transition bimetal complexes for efficient oxygen evolution reactions

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Publication details

The article was received on 21 Jul 2017, accepted on 18 Sep 2017 and first published on 19 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA06387C
Citation: J. Mater. Chem. A, 2017,5, 21320-21327
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    Hollow FeNi-based hybrid polyhedron derived from unique sulfur-modulating coordinated transition bimetal complexes for efficient oxygen evolution reactions

    H. Qiao, J. Yong, X. Dai, X. Zhang, Y. Ma, M. Liu, X. Luan, J. Cai, Y. Yang, H. Zhao and X. Huang, J. Mater. Chem. A, 2017, 5, 21320
    DOI: 10.1039/C7TA06387C

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