超级电容器(NixCo1-x)0.85Se纳米球状正极材料的制备及性能研究

摘要采用溶剂热法制备了镍钴双金属硒化物(Ni_xCo_1-x)_0.85Se电极材料,利用XRD、SEM、TEM以及XPS测试材料的微观形貌和元素组成,通过三电极体系测试电极材料的电化学性能。(Ni_xCo_1-x)_0.85Se呈现纳米球状结构,直径在200~500 nm之间。通过调节实验条件,合成了Ni/Co比例不同的材料,其中(Ni_0.50Co_0.50)_0.85Se具有最大比电容值(2 900 F·g^-1,1 A·g^-1)。(Ni_0.50Co_0.50)_0.85Se与活性炭组装成混合超级电容器,循环稳定性较好(1 A·g^-1电流密度下2 500次充放电循环后,电容保持率83.21%),表明镍钴硒化物在超级电容器领域具有较高的应用价值。

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	张卫国
	陈光耀
	王宏智
	姚素薇

关键词：镍钴硒化物混合超级电容器纳米球状材料

Abstract： Ni-Co bimetal selenide (Ni_xCo_1-x)_0.85Se electrode material was prepared by solvothermal method. The microstructure and elemental composition of the electrode material were measured by XRD, SEM, TEM and XPS. The electrochemical properties of the electrode material were tested by three-electrode system. (Ni_xCo_1-x)_0.85Se presents a nano-spherical structure with a diameter of 200—500 nm. By adjusting the experimental conditions, the materials with different Ni/Co ratios were synthesized, in which (Ni_0.50Co_0.50)_0.85Se had the maximum specific capacitance (2 900 F·g^-1, 1 A·g^-1). (Ni_0.50Co_0.50)_0.85Se was assembled with activated carbon to form hybrid supercapacitor, and the cycle stability was good (the capacitance retention rate was 83.21% after 2 500 charge-discharge cycles at 1 A·g^-1 current density), indicating that Ni-Co selenide has high application value in the field of supercapacitor.

Keywords： nickel cobalt selenide； hybrid supercapacitor； nano spherical material

Received 2022-04-20;

Corresponding Authors: 王宏智,副教授,wanghz@tju.edu.cn Email: wanghz@tju.edu.cn

About author: 张卫国(1972—),男,博士,教授,主要从事新能源材料研究。

引用本文:

张卫国, 陈光耀, 王宏智, 姚素薇.超级电容器(Ni_xCo_1-x)_0.85Se纳米球状正极材料的制备及性能研究[J]. 化学工业与工程, 2025,42(1): 69-77

ZHANG Weiguo, CHEN Guangyao, WANG Hongzhi, YAO Suwei.Preparation and properties of (Ni_xCo_1-x)_0.85Se nano spherical cathode material for supercapacitor[J]. Chemcial Industry and Engineering, 2025,42(1): 69-77

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