以掺氮空心碳球(N-HCS)为骨架,通过化学氧化聚合法制备了聚苯胺纳米刺/掺氮空心碳球复合材料(PANI/N—HCS),采用扫描电子显微镜、透射电子显微镜和红外光谱仪等对样品的形貌、结构等进行了表征.采用循环伏安、计时电位和交流阻抗等方法在1mol/LH:SO。水溶液中考察了材料的电化学性能.结果表明,PANI/N—HCS具有良好的电化学性能,在0.5A/g电流密度下,PANI/N—HCS的比电容达346F/g;当电流密度为20A/g时,PANI/N—HCS比电容值为228F/g,电容保持率为66%;在5A/g电流密度下,经1000次充放电循环后,电容保持率为76%.
Polyaniline/nitrogen-doped hollow carbon spheres (PANI/N-HCS) nanocomposites were prepared via in situ polymerization of nano-sized polyaniline thorns on the surface of nitrogen-doped hollow carbon spheres. The morphology and structure of PANI/N-HCS were characterized by SEM, TEM and FFIR, respec- tively. The electrochemical capacitive behavior of PANI/N-HCS was investigated by cyclic vohammetry, chro- nopotentiometry and electrochemical impedance spectroscopy in 1 mol/L H2SO4 solution. The specific capaci- tance of PANI/N-HCS is 346 F/g at 0. 5 A/g, which is higher than that of each individual component. In addition, PANI/N-HCS shows excellent power characteristics: the specific capacitance is as high as 228 F/g when the current density increases to 20 A/g, and the specific capacitance retains 66% compared to that of 0. 5 A/g. The specific capacitance retains 76% after 1000 charge-discharge cycles.