多孔碳纳米线/MnO_2复合材料的制备及其在电化学超级电容器中的应用研究

Building Porous Carbon Nanofiber/MnO_2 Composite Materails and Their Electrochemical Supercapacitor Properties

采用化学气相沉积法(CVD),以1,2-邻二氯苯和二茂铁为前驱体批量制备高纯度多孔碳纳米线(PCNF)。采用微波法将MnO2负载在多孔碳纳米线上从而构筑MnO2/PCNF复合材料。用SEM、TEM、XRD和TGA等测试手段对所得材料进行形貌及结构分析,采用循环伏安和恒流充放电测试检测MnO2/PCNF复合材料的电容特性。实验结果表明,该复合材料比电容较高,循环性能良好,在1000圈循环测试(2A·g-1)后电容保持率为89.3%。

Highly purity porous carbon nanofibers （PCNF） were synthesized by chemical vapor deposition （CVD） method. And MnO2 nanoparticles were loaded on the PCNF through a microwave assistant method. The morphology and structure of the composite materials were analyzed by SEM, TEM, XRD and TGA characterization. Cyclic voltammetry and galvanostatic charge-discharge tests showed that the composite materials had high specific capacitance and steady cycle performance. The capacitance retention at the 1000th cycle （2A/g） was 89.3%.