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Dispersive non-noble metal phosphide embedded in alumina arrays derived from layered double hydroxide precursor toward efficient oxygen evolution reaction and biomass upgrading

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Abstract

Exploring high-performance and stable electrocatalysts for the oxygen evolution reaction (OER) is critical for the conversion and storage of renewable energy. Herein, a novel strategy was developed for the construction of dispersive nickel phosphide (Ni2P) embedded in two-dimensional (2D) amorphous alumina arrays on three-dimensional (3D) nickel foam (NiP–Al2O3/NF) electrocatalysts via the reduction of a layered double hydroxide (LDH) precursor. Owing to its unique 3D nano/micro-architecture, multi-porous structure, interconnected conductive skeleton, and highly dispersive Ni2P active sites, the NiP–Al2O3/NF electrocatalyst exhibited excellent OER activity with overpotential as low as 193 mV at 10 mA cm−2 in a 1.0 M KOH solution and superior catalytic activity for the oxidation of 5-hydroxymethylfurfural in alkaline media. Density functional theory calculations demonstrated that the introduction of P to Ni could effectively reduce the OER overpotential. Furthermore, benefiting from the flexibility of compositional tailoring of both the brucite-like layers and interlayer anions of LDHs, the synthesis strategy presented here can be easily extended to the fabrication of various nanostructured noble-metal-free functional materials, which are expected to have wide application prospects in many domains, especially in catalysis.

Graphical abstract: Dispersive non-noble metal phosphide embedded in alumina arrays derived from layered double hydroxide precursor toward efficient oxygen evolution reaction and biomass upgrading

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Publication details

The article was received on 04 Apr 2019, accepted on 08 May 2019 and first published on 09 May 2019


Article type: Paper
DOI: 10.1039/C9TA03580J
J. Mater. Chem. A, 2019, Advance Article

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    Dispersive non-noble metal phosphide embedded in alumina arrays derived from layered double hydroxide precursor toward efficient oxygen evolution reaction and biomass upgrading

    M. Li, L. Chen, S. Ye, G. Fan, L. Yang, X. Zhang and F. Li, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA03580J

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