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Issue 6, 2019
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Ultrasmall MoP encapsulated in nitrogen-doped carbon hybrid frameworks for highly efficient hydrogen evolution reaction in both acid and alkaline solutions

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Abstract

Improving the electrocatalytic performance of molybdenum phosphide-based (MoP) electrocatalysts through structure design has become a feasible method to use MoP to supersede noble metallic electrocatalysts for the hydrogen evolution reaction (HER). Herein, we demonstrated a two-step calcining strategy to synthesize a new excellent HER catalyst consisting of MoP nanoparticles loaded on a nitrogen-doped carbon hybrid framework substrate (MoP@NCF), for which acetone was used as the carbon source of the MoP-based electrocatalysts for the first time. The MoP@NCF exhibits an outstanding electrocatalytic performance for the HER with a low overpotential (only 121.8 mV in acid and 129.5 mV in alkaline electrolytes, respectively) at a current density of 10 mA cm−2, which is ascribed to the unique porous nanostructure with an enormous special surface area of 247.43 m2 g−1, and the ultrasmall size and homogeneous distribution of the MoP nanoparticles. Our work provides a rational method to reinforce the HER activity of molybdenum phosphide through structure design, and the therein useful strategy has the possibility of being applied to a range of other metal-based electrocatalyst materials.

Graphical abstract: Ultrasmall MoP encapsulated in nitrogen-doped carbon hybrid frameworks for highly efficient hydrogen evolution reaction in both acid and alkaline solutions

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Publication details

The article was received on 13 Mar 2019, accepted on 15 Apr 2019 and first published on 16 Apr 2019


Article type: Research Article
DOI: 10.1039/C9QI00279K
Inorg. Chem. Front., 2019,6, 1482-1489

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    Ultrasmall MoP encapsulated in nitrogen-doped carbon hybrid frameworks for highly efficient hydrogen evolution reaction in both acid and alkaline solutions

    X. Huang, X. Wang, P. Jiang, K. Lan, J. Qin, L. Gong, K. Wang, M. Yang, L. Ma and R. Li, Inorg. Chem. Front., 2019, 6, 1482
    DOI: 10.1039/C9QI00279K

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