Electronic modulation of sprout-shaped NiCoP nanoarrays by N and Ce doping for efficient overall water splitting

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外文摘要：Bifunctional catalysts for hydrogen/oxygen evolution reactions(HER/OER)are urgently needed given the bright future of water splitting hydrogen production technology.Here,the self-supporting N and Ce dual-doped NiCoP nanoarrays(denoted N,Ce-NiCoP/NF)grown on Ni foam are successfully constructed.When the N,Ce-NiCoP/NF simultaneously acts as the HER and OER electrodes,the voltages of 1.54 and 2.14 V are obtained for driving 10 and 500 mA.cm-2 with a robust durability,and demonstrate its significant potential for practical water electrolysis.According to both experiments and calculations,the electronic structure of NiCoP may be significantly altered by strategically incorporating N and Ce into the lattice,which in turn optimizes the Gibbs free energy of HER/OER intermediates and speeds up the water splitting kinetics.Moreover,the sprout-shaped morphology significantly increases the exposure of active sites and facilitates charge/mass transfer,thereby augmenting catalyst performance.This study offers a potentially effective approach involving the regulation of anion and cation double doping,as well as architectural engineering,for the purpose of designing and optimizing innovative electrocatalysts.

外文关键词：

transition metal phosphidesoverall water splittingelements dopingnanoarrays

作者：

Ting Zhao、Guancheng Xu、Bingbing Gong、Jiahui Jiang、Li Zhang

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作者单位：

State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,College of Chemistry,Xinjiang University,Urumqi 830017,China

College of Chemical Engineering,Xinjiang University Urumqi 830017,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Xinjiang Uygur Autonomous Region

项目编号：

21965035220650342022D01E36

出版年：

2024

DOI：

10.1007/s12274-023-5769-9

纳米研究(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.17(1)

参考文献量56