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以中温煤沥青为原料, 采用酸溶液脱灰以及氢氧化钾活化工艺制备了超纯煤沥青基活性炭, 系统研究了活化温度对样品的微观形貌、孔结构以及电化学性能的影响.结果表明, 随着活化温度的提高, 样品的孔结构变得发达, 孔径分布变宽;总比表面积和总孔体积先增加后又略微减小, 中孔比表面积和中孔体积逐渐增大, 在0.2A/g电流密度下比容量高达300F/g, 10A/g电流密度时仍保持为174F/g, 5A/g电流密度下充放电循环5000次以后, 其比容量保持率高达98％, 表明样品具有良好的倍率特性和循环稳定性能.“,”Ultra pure coal pitch based activated carbons were prepared by acid pickling of medium temperature coal tar pitch and KOH activation.The effects of activation temperature on the micro-morphology, pore structure and electrochemical performance of supercapacitors were systematically studied.The results indicated that with the increasing of activation temperature, the pore structure of samples was developed, and the pore size distribution was widened.However, the total specific surface area and total pore volume were increased firstly at 750℃and decreased at850℃.The specific surface area and pore volume of mesopores were increased gradually.The specific capacitance of activated carbons prepared at 650℃ was 300 F·g-1 at current density of 0.2 A·g-1, and still maintains 174 F·g-1 at10 A·g-1.Besides, after 5000 charging and discharging cycles at 5 A·g-1, the specific capacitance retention was 98％, indicating the good rate performance and cycling stability.