泡沫镍上原位合成硒化镍与电解水性能研究  

In Situ Synthesis of Nickel Selenide on Ni Foam for Electrocatalytic Water Splitting

作　　者：杨海华[1] 蒋令杰 阎建辉[1] 张丽[1] YANG Hai-hua;JIANG Ling-jie;YAN Jian-hui;ZHANG Li(Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials,School of Chemistry and Chemical Engineering,Hunan Institute of Science and Technology,Yueyang 414006,China)

机构地区：[1]湖南理工学院化学化工学院,湖南省先进碳基功能材料重点实验室,湖南岳阳414006

出　　处：《精细化工中间体》2020年第3期47-51,58,共6页Fine Chemical Intermediates

基　　金：湖南省自然科学基金项目(2019JJ50206);湖南省教育厅科学研究项目(19B230)。

摘　　要：过渡金属硒化物已被认为是一类极具发展前景的电解水催化剂。以泡沫镍为基底和镍源,通过一步水热法在泡沫镍上负载硒化镍制备电催化剂(记为Ni-Se@NF)。扫描电镜图表明,在泡沫镍表面原位生长合成了一层纳米颗粒;X射线衍射和X射线光电子能谱表征证明该层纳米颗粒为Ni0.85Se和Ni3Se2。在1 mol·L^-1KOH电解质中,对Ni-Se@NF电极进行了双催化电解水性能测试。Ni-Se@NF电极的析氢电流密度10 mA·cm^-2时的超电势为153 mV,析氧电流密度50 mA·cm^-2时的超电势为340 mV,并表现出良好的稳定性。Transition metal selenides have attracted extensive attention as promising electrocatalysts for water splitting.Herein,the direct growth of nickel selenide on nickel foam(denoted as Ni-Se@NF)was demonstrated via a simple one-step hydrothermal approach.A film layer composed of nanoparticles was observed by scanning electron microscope,which was further demonstrated as Ni0.85Se and Ni3Se2 by X-ray diffraction and X-ray photoelectron spectroscopy.The as-obtained Ni-Se@NF was applied as electrodes for bifunctional water splitting in 1 mol·L^-1 KOH,demanding a low overpotential of 153 mV to achieve the current density of 10 mA cm^2 for HER,a small overpotential of 340 mV to achieve the current density of 50 mA·cm^-2 for OER,as well as good stability.

关 键 词：硒化镍 泡沫镍 电解水 析氢反应 析氧反应 

分 类 号：O643[理学—物理化学]