二氧化锰氧化制备超级电容器用PANI-CNTs纳米复合材料  

Preparation of PANI-CNTs nanocomposite materials oxidized by manganese dioxide for supercapacitor

作　　者：钟新仙[1] 王芳平[1] 汪艳芳[1] 王新宇[1,2] 卢胜彬[1] 王红强[1] 

机构地区：[1]广西师范大学化学化工学院,桂林541004 [2]中南大学冶金科学与工程学院,长沙410083

出　　处：《化工新型材料》2010年第5期56-58,共3页New Chemical Materials

基　　金：广西青年科学基金项目(桂科青0832025);国家自然科学基金(20663001)

摘　　要：以二氧化锰(MnO2)作为氧化剂,采用化学原位聚合法在室温下制备得到聚苯胺-碳纳米管(PANI-CNTs,简称为M-PC)纳米复合材料,并采用SEM、XRD对PANI-CNTs复合材料的结构与性能进行了表征。用恒电流充放电技术测试了以其作为电极的超级电容器的电化学性能。恒电流充放电实验结果表明,在电流密度5mA.cm-2下单电极比容量达355F.g-1,1000次循环后比容量仍有189F.g-1。M-PC较以过硫酸铵(APS)为氧化剂制备的PANI-CNTs(简称为N-PC)具有更好的循环性能和更高的比容量。PANI-CNTs were prepared by chemical in-situ polymerization at ambient temperature,using manganese dioxide as the oxidant.The morphology and structure of PANI-CNTs were characterized by scanning electron microscopy（SEM） and X-ray diffraction（XRD）.The electrochemical performances of the supercapacitor assembled with PANI-CNTs were investigated by cyclic voltammetry and galvanostatic charge-discharge.The specific capacitance of the M-PC electrode was about 355 F·g-1 at the charge-discharge current density of 5mA·cm-2.After 1000 charge-discharge cycles the specific capacitance of the M-PC electrode was about 189F·g-1.For comparison,M-PC had better cycle performance and higher capacity than N-PC,which was prepared by ammonium persulphate.

关 键 词：二氧化锰 聚苯胺-碳纳米管 超级电容器 

分 类 号：TB383.1[一般工业技术—材料科学与工程]