化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (1) : 189-193. DOI: 10.19817/j.cnki.issn1006-3536.2025.01.035

科学研究

Ni_1-xSe(x=0和0.15)的水热合成及电催化性能研究

^1,2*

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Hydrothermal synthesis and electrocatalytic properties of Ni_1-xSe(x=0 and 0.15)

Yang Hao¹, Zhu Jiaqi¹, Huo Di^1,2

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Received		Published
2023-12-09		2025-01-20
Issue Date	Revised Date
2025-01-17	2023-12-09

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摘要

以天然植物酚酸-没食子酸为还原剂,在温和水热反应条件下一步合成制备了Ni_1-xSe(x=0和0.15)纳米粉体。同时,研究了水热反应中反应温度和溶液pH对产物组成的影响。利用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)、透射电镜(TEM)以及电化学测试等方法对水热产物进行分析与表征。结果表明,在水热温度为180℃、pH=12的溶液中,所得产物为单相NiSe;在水热温度200℃,pH=7的溶液中产物为单相Ni_0.85Se。其中,NiSe纳米颗粒表现出明显的电催化析氢反应活性,在电流密度为10mA/cm²时,NiSe电极的过电势为398mV,Tafel斜率为152mV/dec,并具有良好的稳定性。

Abstract

Ni_1-xSe(x=0 and 0.15) nano-powders were prepared by one-step synthesis using natural plant phenolic acid-gallic acid as reducing agent under mild hydrothermal reaction conditions.Meanwhile,the effects of reaction temperature and solution pH on the composition of the products in hydrothermal reaction were studied.XRD,XPS,SEM,TEM and electrochemical tests were also performed to characterize the hydrothermal products.The results showed that single-phase NiSe could be obtained at temperature of 180℃ and pH=12,whereas at temperature of 200℃ and pH=7,single-phase Ni_0.85Se was obtained.Among them,NiSe nano-powders exhibited obvious electrocatalytic activities for the hydrogen evolution reaction,with an overpotential of 398mV,a Tafel slope of 152mV/dec,and good electrocatalytic stability at current density of 10mA/cm².

关键词

硒化镍 / 没食子酸 / 水热合成 / 电化学性能

Key words

nickel selenide / gallic acid / hydrothermal synthesis / electrochemical properties

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Ni_1-xSe(x=0和0.15)的水热合成及电催化性能研究[J]. 化工新型材料, 2025, 53(1): 189-193 DOI:10.19817/j.cnki.issn1006-3536.2025.01.035

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基金资助

国家自然科学基金(51872033)

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