采用原位聚合法,以过硫酸铵为氧化剂,在比表面积为2945cm2/g的中间相沥青基活性炭微球（AMCMB）表面引发苯胺聚合,制备中间相沥青基活性炭微球/聚苯胺复合材料（AMCMB/PANI）。利用扫描电镜、X射线衍射和傅里叶变换-红外光谱分析,考察其微观结构和表面形貌;通过恒流充放电、循环伏安及交流阻抗测试,研究其在6mol/LKOH溶液中的电化学性能。在电流密度为0.02A/g时,AMCMB/PANI电极的比容量为387.72F/g,与AMCMB电极的比容量相比,提高了57.46%,说明少量聚苯胺的加入可以显著地提高电极材料的比容量;当电流密度增大1000倍时,AMCMB/PANI电极的比容量为157.68F/g,表现出好的大电流充放电能力。
Activated mesocarbon microbeads/polyaniline composite (AMCMB/PAN1) was synthesized by ln-SltU polymerization of aniline on activated mesocarbon microbeads (AMCMB) with high specific surface area of 2945cm2/g, using ammonium persul~ate as oxidant. Microstructure and morphology of AMCMB/PANI were investigated by scanning electron microscope, X-ray diffraction and Fourier transform infrared spectroscopy. The electrochemical properties of AMCMB/PANI were studied in 6mol/L KOH solution by galvanostatic charge/discharge, cyclic voltammetry and electrochemical impedance spectroscopy. The specific capacitance of AMCMB/PANI electrode was 387.72F/g under the specific current of 0.02A/g by constant current charge/dis- charge technique, and increased by 57. 46%, comparing with the specific capacitance of AMCMB electrode, showing that a small amount of polyaniline could significantly improve the specific capacitance of electrode ma- terial. When the specific current increased 1000 times, the specific capacitance of AMCMB/PANI electrode was 157.68F/g, indicating good rate capability.
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