聚苯胺/碳纳米纤维超级电容器电极材料的制备及其性能

采用化学氧化原位聚合法制备聚苯胺纳米棒(PANI)、PANI和氮掺杂碳纳米纤维(NCNFs)的复合材料(PANI/NCNFs)。扫描电镜(SEM)结果表明, PANI纳米棒均匀生长在NCNFs的表面,制备的复合材料直径约为150～200 nm。恒流充放电结果表明,当放电电流密度为0.2 A/g时, PANI/NCNFs-1、PANI/NCNFs-2和PANI/NCNFs-3(苯胺浓度分别为0.256、0.337、0.160 mol/L制备)可以获得877、693和563 F/g的比电容。PANI/NCNFs复合材料具有优异的比电容和倍率性能,该材料在电化学储能器件领域具有广阔的应用前景。

The Preparation and Performance of Polyaniline/Carbon Nanofiber Supercapacitor Electrode Material

Thepolyanilinenanorods(PANI),PANIandpolyaniline/nitrogen-dopedcarbonnanofibercompositematerials(PANI/NCNFs) have been synthesized by chemical oxidation polymerization. The scanning electron microscope (SEM) results demonstrate that PANI grows uniformly on the surface of NCNFs. The diameter of the prepared composite material is about 150-200 nm. The charge/discharge measurements demonstrate that the specific capacitances of PANI/NCNFs-1, PANI/NCNFs-2 and PANI/NCNFs-3 (aniline concentra- tion: 0.256, 0.337 and 0.160 mol/L) are 877, 693 and 563 F/g at the discharge current density of 0.2 A/g, respectively. The PANI/NCNFs composite materials possessed excellent specific capacitance and rate performance. The materials have great potential for future appli- cations in the field of electrochemical energy storage devices.