碳纳米管的修饰及其在超级电容器中的应用

Modification of Carbon Nanotubes and its Application in Supercapacitor

碳纳米管以其窄孔径分布、高有效比表面积、良好导电性能、良好力学性能、优良化学稳定性和良好热稳定性以及较低成本等优点,被认为是超级电容器的理想电极材料之一。本文结合碳材料具有的双电层电容和金属氧化物、导电聚合物具有的准法拉第电容,综述了碳纳米管的修饰处理技术及碳纳米管/金属氧化物、碳纳米管/导电聚合物复合材料、碳纳米管原位再生长技术的研究进展,指出碳纳米管的修饰能更好地改善其电化学性质,因此碳纳米管复合材料是超级电容器电极材料研究的一个重要发展方向。

Carbon nanotubes （CNTs） are attractive electrode material for supercapacitors due to their characteristics of narrow pore size distribution, large electrochemically accessible surface area, high electronic conductivity, good mechanical properties, excellent chemical stability, high thermal stability and low cost. Based on the advantages of double - layer capacitance of carbon materials and pseudo - capacitance of metal oxide or conducting polymer, the progress of modification and preparation technologies for CNTs/metal oxide, CNTs/conducting polymer composites and in situ - growth of CNTs were discussed in the paper. It was concluded that the electrochemical properties of CNTs can be significantly improved by modifieation technology and believed that carbon nanotubes composites are the potential electrode materials for the application of supercapacitor.