3D Se-doped NiCoP nanoarrays on carbon cloth for efficient alkaline hydrogen evolution

来源期刊:中南大学学报(英文版)2021年第8期

论文作者:胡爱平 陈小华 刘紫轩 王晓龙 唐群力 徐亚利

文章页码:2345 - 2359

Key words:Se-NiCoP nanorods; multi-level array structure; hydrogen evolution reaction; alkaline solution; water splitting

Abstract: The exploration of stable and highly efficient alkaline hydrogen evolution reaction (HER) electrocatalysts is imperative for alkaline water splitting. Herein, Se-doped NiCoP with hierarchical nanoarray structures directly grown on carbon cloth (Se-NiCoP/CC) was prepared by hydrothermal reaction and phosphorization/selenization process. The experimental results reveal that Se doping could increase the electrochemical active sites and alter the electronic structure of NiCoP. The optimized Se-NiCoP/CC electrode exhibits outstanding HER activity in alkaline electrolyte, which only needs a low overpotential of 79 mV at the current density of 10 mA/cm2. When serving as anode and cathode electrode simultaneously, the Se-NiCoP/CC electrodes achieve current density of 50 mA/cm2 at a low voltage of only 1.62 V. This work provides a feasible way to rationally design high active HER electrocatalysts.

Cite this article as: LIU Zi-xuan, WANG Xiao-long, HU Ai-ping, TANG Qun-li, XU Ya-li, CHEN Xiao-hua. 3D Se-doped NiCoP nanoarrays on carbon cloth for efficient alkaline hydrogen evolution [J]. Journal of Central South University, 2021, 28(8): 2345-2359. DOI: https://doi.org/10.1007/s11771-021-4774-y.

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