材料科学与工程学报2017，Vol.35Issue(4)：542-547,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.04.006
中空Cu7S4纳米立方的制备及其电化学电容性能
Cubic Nano Cu7S4 with Hollow Structures: Their Preparation and Electrochemical Capacitance Performance
摘要
Abstract
Cu2O was synthesized by chemical precipitation,then nano Cu7S4 was synthesized via a hydrothermal ion-exchange method using the Cu2O as the template.Characterizations of the product using Xray diffraction (XRD),scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show that the Cu7S4 has a hollow cubic structure,with an average size of ～ 550nm.Electrochemical performance of the Cu7S4 was investigated by cyclic voltammetry,galvanostatic charge-discharge,electrochemical impedance and cycle stability test with a three-electrode system.The test results show that the specific capacitance of the material is 275F· g-1 at a current density of 1A· g-1.At 4 A· g-1,it can retain 94.8 ％ of the specific capacitance after 1000 cycles,showing good cycling stability.关键词
纳米立方体/水热合成/电化学/超级电容器Key words
nanocube/hydrothermal synthesis/electrochemistry/supercapacitor分类
通用工业技术引用本文复制引用
汪翔,陈新,周王帆,李顺英..中空Cu7S4纳米立方的制备及其电化学电容性能[J].材料科学与工程学报,2017,35(4):542-547,6.基金项目
上海市重点学科和重点实验室资助项目(B502、08DZ2230500),上海市科学技术委员会资助项目(11nm0507000),信息功能材料国家重点实验室开放课题资助项目(SKL201306) （B502、08DZ2230500）
