微波液相合成氧化铜纳米片及电容性能  

Microwave-assisted liquid-phase synthesis of copper oxide nanosheet and its capacitive properties

作　　者：李伟[1] 李纪伟 解小玲[1] 于富成[2] LI Wei;LI Ji-wei;XIE Xiao-ling;YU Fu-cheng(College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]兰州理工大学材料科学与工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2019年第5期28-32,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(61501318)

摘　　要：采用微波辅助液相合成法制备了氧化铜纳米片,探讨了该形貌氧化铜的电化学性能,并与化学沉淀法合成的碎屑状氧化铜纳米颗粒的性能作比较.使用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱仪(XPS)对二者的组分及结构形貌进行了表征,使用循环伏安法和恒流充放电法研究了二者的电容性能.结果表明:使用微波法合成的氧化铜纳米片体系较碎屑状的氧化铜具有更优良的形貌结构和更高的比电容值,在1 mol/L的KOH电解液,1 A/g的电流密度下,氧化铜纳米片体系与碎屑状氧化铜体系的比电容值分别可达440.338 F/g.Copper oxide nanosheets were prepared by means of microwave-assisted liquid-phase synthesis method and electrochemical properties of copper oxide in this form were investigated and compared with those of clastic copper oxide nanoparticles synthesized by chemical precipitation method. The composition and structural morphology of the both were characterized by means of X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM) and X-ray photoelectron spectroscopy(XPS), and the capacitive properties of the both were investigated by means of cyclic voltammetry and galvanostatic charge-discharge. The result showed that the nanosheet system of copper oxide synthesized with microwave method would possess a better morphologic structure and higher specific capacitance than that of clastic copper oxide. The specific capacitance values of the both systems of copper oxide would reach 440, 338 F/g at 1 A/g in 1 mol/L KOH electrolyte, respectively.

关 键 词：微波合成 氧化铜 超级电容器 

分 类 号：TB324[一般工业技术—材料科学与工程]