NiCo_2S_4/石墨纸的制备及其在超级电容器中的应用  

Preparation and Application of NiCo_2S_4/graphite Sheet for Supercapacitor

作　　者：廖明佳 赵红静[2] 乔雷[3] 周志恩[3] 

机构地区：[1]重庆化工职业学院化学工程系,重庆400020 [2]重庆市环境保护局,重庆400020 [3]重庆环境科学研究院,重庆400020

出　　处：《广东化工》2017年第15期124-126,共3页Guangdong Chemical Industry

基　　金：重庆市长寿区科技计划项目(CS2017006);重庆化工职业学院科技重点项目(HZY2016-KJ01)

摘　　要：采用一步溶剂热合成法在石墨纸上制备了镍钴硫化物。利用X射线衍射光谱(XRD)和扫描电子显微镜(SEM)对制备的材料进行了表征。采用循环伏安和恒电流充放电法对其电化学性能进行了测试。在1 mA cm^(-2)的电流密度下,测得的质量比电容为1347F g^(-1)。在电流密度为10 mA·cm^(-2)下,经过3000圈的循环稳定性测试后,比电容保持了原来的74%。将制备的材料作为正极,活性炭作为负极,组装了非对称超级电容器,其能量密度和功率密度为21 Wh kg^(-1)和3.58 kW kg^(-1)。Nickel cobalt sulfide was supported on graphite sheet by a facile solvothermal synthesis method. The properties of the film was characterized by X-ray ditTraction （XRD） and scanning electron microscopy （SEM）. Cyclic voltammetry （CV） and galvanostatic charge-discharge measurement were also employed to test the electrochemical performances of the film as electrode material of supercapacitor. The electrode presenteda a specific capacitance 1298 F g^-1 at charge and discharge current density of 1 mA cm^-2. After 3000 cycles tests, it retains 74% of the its initial capacitance. What＇s more, the as-prepared NiCo2S4 as positive electrode and commercial active carbon as negative electrode were assembled an asymmetric supercapacitor, which exhibited an energy density of 21 Wh kg^-1 and power density of 3.58 kW kg^-1.

关 键 词：镍钴硫化物 石墨纸 溶剂热 非对称超级电容器 

分 类 号：O646[理学—物理化学]