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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

Abstract

Exploring high-performance and stable electrocatalyst for the oxygen evolution reaction (OER) is of critical for conversion and storage of renewable energy. Herein, a novel strategy is 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 a reduction of layered double hydroxides (LDHs) 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 exhibits 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-hydroxymethylfrufurl in alkaline media. Density functional theory calculations demonstrate that introduction of P to Ni can effectively reduce the overpotential of OER. Furthermore, benefiting from the flexibility of compositional tailoring in both brucite-like layers and interlayer anions of LDH, 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 prospect in many domains, especially in catalysis.

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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, Accepted Manuscript

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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, Accepted Manuscript , DOI: 10.1039/C9TA03580J

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