MnO_2/竹炭超级电容器电极材料的性能  

Study of MnO_2/bamboo-based activated carbon composites as electrode materials for supercapacitors

作　　者：宁娈[1] 陈晓红[1] 宋怀河[1] 岳永德[2] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]国际竹藤网络中心,北京100102

出　　处：《北京化工大学学报（自然科学版）》2010年第2期65-69,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金："十一五"国家科技支撑计划项目(2008BADA9B05)

摘　　要：采用机械球磨法将竹炭和MnO2按不同比例复合,得到一系列不同配比的MnO2/竹炭电容器电极复合材料,对其进行扫描电子显微镜(SEM),X射线衍射(XRD)和热重分析(TG-DSC),并进行循环伏安和电化学充放电测试。结果发现,当MnO2在复合材料中的质量分数为1%时,电极比容量可以达到338 F/g,100次循环后维持在260 F/g,显示很好的电化学性能。A series of MnO2/bamboo-based activated carbon composites with different MnO2 contents were prepared by a mechanical milling method and investigated by scanning electron microscopy, X-ray diffraction and thermo- gravimetry-differential scanning calorimetry. Cyclic voltammetry and constant current charge-discharge tests were al- so carried out. The specific capacitance of the composite containing 1% MnO2 reached a maximum of 338 F/g and retained a value of 260 F/g after 100 charge-discharge cycles. The excellent electrochemical performance shows that the materials have potential applications in supercapacitors.

关 键 词：竹炭 MNO2 超级电容器 

分 类 号：TM53[电气工程—电器] TM911