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Surface anion-rich NiS2 hollow microspheres derived from metal-organic frameworks as a robust electrocatalyst for hydrogen evolution reaction

Abstract

Exploring highly efficient and low cost electrocatalysts for hydrogen evolution reaction (HER) remains a significant challenge in the renewable energy area. In this study, we report a novel metal-organic framework (MOF)-engaged microwave sulfurization strategy to synthesize the pyrite-structured nickel disulfide microspheres (NiS2 HMSs) with well-defined hollow morphology and surface anion modification. The resulting NiS2 HMSs exhibit excellent performance for electrocatalyzing HER with expected activity and durability. The optimized NiS2 HMSs need only 219 mV to offer a current density of 10 mA cm-2 for HER in alkaline medium, which compare favorably to previously reported Ni-based nonprecious electrcatalysts and even outperform most of nickel sulfide-based electrocatalysts. This work will open a new avenue for the preparation of various surface anion-rich metal sulfides from corresponding MOFs for the electrocatalytic water splitting.

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Publication details

The article was received on 29 Jul 2017, accepted on 07 Sep 2017 and first published on 07 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA06671F
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Surface anion-rich NiS2 hollow microspheres derived from metal-organic frameworks as a robust electrocatalyst for hydrogen evolution reaction

    T. Tian, L. Huang, L. Ai and J. Jiang, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA06671F

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