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Issue 35, 2016
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Interlaced NiS2–MoS2 nanoflake-nanowires as efficient hydrogen evolution electrocatalysts in basic solutions

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Abstract

The electrocatalytic activity of transition metal sulfides is strongly correlated with the active edge sites and conductivity of the catalysts. Here we developed a hybrid nanowire structure consisting of NiS2–MoS2 interlaced nanoflakes by the thermal conversion of nickel molybdate (NiMoO4) nanowire precursors. The obtained NiS2–MoS2 interlaced nanoflakes have sub-200 nm sizes with abundant active edge sites and defects, as well as synergistic nanoscale interfaces between NiS2 and MoS2 throughout the whole structure. The hetero-nanowires exhibit superior hydrogen evolution reaction (HER) catalytic activity including a low onset potential of 76 mV and a small Tafel slope of 70 mV dec−1 in a 1 M KOH aqueous solution, which substantially exceeds those of most of the metal sulfide HER catalysts including individual NiS2 and MoS2 nanostructures in basic solutions.

Graphical abstract: Interlaced NiS2–MoS2 nanoflake-nanowires as efficient hydrogen evolution electrocatalysts in basic solutions

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Publication details

The article was received on 15 Jun 2016, accepted on 20 Jul 2016 and first published on 20 Jul 2016


Article type: Paper
DOI: 10.1039/C6TA05022K
J. Mater. Chem. A, 2016,4, 13439-13443

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    Interlaced NiS2–MoS2 nanoflake-nanowires as efficient hydrogen evolution electrocatalysts in basic solutions

    T. An, Y. Wang, J. Tang, W. Wei, X. Cui, A. M. Alenizi, L. Zhang and G. Zheng, J. Mater. Chem. A, 2016, 4, 13439
    DOI: 10.1039/C6TA05022K

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