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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。
Polyaniline-carbon nanotubes (PANI-CNTs, abbreviated as M-PC) nanocomposites were prepared by chemical in-situ polymerization using manganese dioxide (MnO2) as oxidant. PANI- CNTs composites were characterized by their structures and properties. The electrochemical performance of supercapacitors with their electrodes was tested by a constant current charge-discharge technique. The results of constant current charge and discharge experiments show that the specific capacity of single electrode is up to 355F-1 at the current density of 5mA.cm-2, and the specific capacity is still 189F.g-1 after 1,1000 cycles. M-PC has better cycle performance and higher specific capacity than PANI-CNTs (abbreviated as N-PC) prepared with ammonium persulfate (APS) as oxidant.