超电容器碳纳米管与钼复合电极材料的研究

Study on Carbon Nanotubes/Molybdenum Composite Electrode Materials for Supercapacitors

以碳纳米管(CNTs)为基体材料,用浓硝酸回流处理碳纳米管,TEM(透射电子显微镜)研究表明碳纳米管的端帽被部分打开,通过液相反应对碳纳米管进行表面改性,制备CNTs/Mo复合电极材料,复合电极使电解液和导电材料的接触面积增大,使电极反应的有效表面积增大,反应场所有所增加,从而提高电极电化学反应的活性。基于此复合材料的超电容器具有高比电容、高稳定性、良好的可逆性和长寿命等特点。循环伏安结果表明:CNTs/Mo复合电极的比电容比纯CNTs电极要高出20%。

A composite electrode material comprised of carbon nanotubes （CNTS） and molybdenum was prepared by the method of refluxing the CNTS firstly, and then depositing molybdenum on the refluxed CNTs. The capacity and conductivity of the electrode were enhanced and the charge/discharge property of electrochemical was improved. The results of experiment show that the properties of composite are promising candidates as ideal electron conductors of the suercapacitor and the capacitance of composite electrode based on supercapacitor can increase by 20 %.