以富勒烯烟灰萃余物(DFS)为前驱体,CO2为活化剂,制备出高比表面积纳米级颗粒炭(ADFS)。采用TEM、XRD、氮气吸附技术对材料进行结构表征。研究产品作为电化学电容器电极材料的性能,考察制备工艺及条件对材料性能的影响。结果表明：活化温度和时间是影响产品比表面积和孔结构的主要因素。 ADFS作为电化学电容器电极材料表现出理想的双电层性能和优异的快速充放电性能：经1173 K,CO2活化2 h的样品,在400 mV·s-1扫描速率下,循环伏安曲线依然表现为准矩形特性,在4 A·g-1的电流密度下材料的质量比电容为126 F·g-1。
Activated carbons (ACs) were prepared by CO2 activation using depleted fullerene soot as precursor. The structure of the ACs was investigated by TEM, XRD, and nitrogen adsorption. Their electrochemical properties in electrochemical capacitors were tested by cyclic voltammetry (CV) and galvanostatic charge/discharge methods in a three-electrode cell. Activation temperature and time were proved to be key parameters in controling the development of porosity and surface area of the ACs. The ACs have an excellent electro-chemical performance with fast charge/discharge characteristics. AC activated at 1173 K for 2 h exhibits an excellent electrochemical per-formance even at a high scanning rate of 400 mV·s-1 with a quasi-rectangular CV curve and its specific capacitance is up to 126 F·g-1 at a high current density of 4 A·g-1 .
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