Issue 40, 2017

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

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

Supplementary files

Article information

Article type
Paper
Submitted
21 Jul 2017
Accepted
18 Sep 2017
First published
19 Sep 2017

J. Mater. Chem. A, 2017,5, 21320-21327

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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