超级电容器(Ni_(x)Co_(1-x))_(0.85)Se纳米球状正极材料的制备及性能研究  

Preparation and properties of(Ni_(x)Co_(1-x))_(0.85)Se nano spherical cathode material for supercapacitor

作　　者：张卫国[1,2] 陈光耀 王宏智 姚素薇[1] ZHANG Weiguo;CHEN Guangyao;WANG Hongzhi;YAO Suwei(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;Tianjin University of Sport,Tianjin 301617,China)

机构地区：[1]天津大学化工学院,天津300072 [2]天津体育学院,天津301617

出　　处：《化学工业与工程》2025年第1期69-77,共9页Chemical Industry and Engineering

摘　　要：采用溶剂热法制备了镍钴双金属硒化物(Ni_(x)Co_(1-x))_(0.85)Se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_(x)Co_(1-x))_(0.85)Se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_(0.50)Co_(0.50))_(0.85)Se具有最大比电容值(2 900 F·g^(-1),1 A·g^(-1))。(Ni_(0.50)Co_(0.50))_(0.85)Se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。Ni-Co bimetal selenide(Ni_(x)Co_(1-x))_(0.85)Se 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_(x)Co_(1-x))_(0.85)Se 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_(0.50)Co_(0.50))_(0.85)Se had the maximum specific capacitance(2900 F·g^(-1),1 A·g^(-1)).(Ni_(0.50)Co_(0.50))_(0.85)Se was assembled with activated carbon to form hybrid supercapacitor,and the cycle stability was good(the capacitance retention rate was 83.21%after 2500 charge-discharge cycles at 1 A·g^(-1)current density),indicating that Ni-Co selenide has high application value in the field of supercapacitor.

关 键 词：镍钴硒化物 混合超级电容器 纳米球状材料 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM53[电气工程—电器]