Facile synthesis of hierarchical NiCoP nanosheets/NiCoP nanocubes homojunction electrocatalyst for highly efficient and stable hydrogen evolution reaction

被引:67
作者
Lu, Yikai [1 ]
Liu, Chenchen [1 ]
Xu, Shengjie [1 ]
Liu, Yu [1 ]
Jiang, Deli [1 ]
Zhu, Jianjun [1 ]
机构
[1] Jiangsu Univ, Sch Chem & Chem Engn, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China
关键词
NiCoP nanocubes; NiCoP nanosheets; Interfacial engineering; Homojunction; Hydrogen evolution reaction; MULTIFUNCTIONAL ELECTROCATALYST; BIFUNCTIONAL ELECTROCATALYSTS; NANOWIRE ARRAYS; CARBON CLOTH; NI FOAM; PHOSPHIDES; OXYGEN; HETEROSTRUCTURES; NANOPARTICLES; NANOSTRUCTURE;
D O I
10.1016/j.apsusc.2021.150537
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Designing and synthesizing stable, low-cost, and eco-friendly precious-metal-free electrocatalysts with high performance for hydrogen evolution is a critical and challenging task in the research and development of renewable hydrogen energy. Herein, we show an interfacial engineering strategy to synthesize the NiCoP nanosheets/NiCoP nanocubes homojunction electrocatalyst supported on Ni foam (2D/3D-NiCoP/NF). The assynthesized 2D/3D-NiCoP/NF catalyst shows impressive HER activity, and a current density of 10 mA cm-2 can be achieved with only an overpotential of 37 mV in 1 M KOH solution. Such impressive HER performance of this 2D/3D-NiCoP/NF homojunction electrocatalyst is principally due to the exposure of abundance accessible active sites originated from the hierarchical structure of nanocubes on the nanosheets. Moreover, the intimate contact between 2D/3D-NiCoP and NF can simultaneously shorten the electron transport pathway and improve its stability. This novel 2D/3D-NiCoP/NF homojunction is expected to provide a powerful interface-engineering reference for the design and construction of high-efficiency synergistic HER electrocatalysts.
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页数:9
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