碳纳米管–聚吡咯复合材料在超电容器中的应用

在碳纳米管(CNT)基体上用化学聚合或电化学聚合方法沉积聚吡咯(PPy)制得复合材料。再以此类复合材料为活性物质制作电极,组装成原型超电容器。并对其进行了循环伏安、恒电流充放电等电化学测试。用此类复合材料制成的原型超电容器的比容量(23.6 F/g)与纯碳纳米管(2.3 F/g)或纯聚吡咯(3.9 F/g)制成的原型电容器比较,发现复合电极电容器比容量的提高不是简单的加和效应,而是协同效应所致。

The Application of Carbon Nanotube-polypyrrole Composite to Supercapacitor

Carbon nanotube-polypyrrole composite was prepared by polymerizing polypyrrole onto carbon nanotubes with chemical or electrochemical methods. With the acquired composites as active materials of electrodes, the prototype supercapacitors were made. Electrochemical tests, such as cyclic voltammetry, charging-discharging cycles were carried out. The specific capacitance the capacitor with composite electrodes has been greatly enhanced (up to 23.6 F/g) compared with the that of those capacitors with pure carbon nanotube electrodes (up to 2.3 F/g) or pure polypyrrole electrodes (up to 3.9 F/g). This might be caused by cooperative effect between carbon nanotube and covered polypyrrole.