中间相沥青基碳电极材料的制备工艺优化与性能  

Praparation Optimization and Performance of Carbon Electrode Materials Based Mesophase Pitch

作　　者：李晶[1,2] 赵晓东[2] 李小宏[1] 赖延清[2] 刘业翔[2] 

机构地区：[1]西南科技大学材料科学与工程学院,绵阳621000 [2]中南大学冶金科学与工程学院,长沙410083

出　　处：《材料导报》2011年第14期68-71,共4页Materials Reports

基　　金：国家科技支撑计划资助项目(2007BAE12B01)

摘　　要：以煤焦油沥青为原料,采用"中间相调制-化学活化"工艺制备了超级电容器用活性碳电极材料,考察了中间相调制温度对活性碳晶体结构、孔径分布、电容量特性的影响,并分析了中间相沥青的调制过程及不同实验条件对活性碳晶体结构、孔径分布、电容量特性的影响。结果表明,中间相沥青调制温度主要集中在190～492.5℃,随中间相调制温度升高,活性碳电极材料的振实密度明显增大,在500℃条件下制备的活性碳材料具有最高的比电容量,达到103F/g,较高的调制温度能提升活性碳中碳的边缘层含量,从而提高材料的面积比电容量。The coal-tar pitch was used as raw material, ＂mesophase modification-chemical activating＂ technique was used to prepare the activated carbon electrode material for supercapacitor. The influnence of mesophase modifica tion temperature on the microcrystal structure, pore distribution, specific capacitance of activated carbon materials was investigated in detail. The process of mesophase pitch modification and the influence of the technique conditions on the microcrystal structure, pore distribution, specific capacitance of activated carbon electrod materials were discussed. The results indicated that mesopitch modification temperature range from 190℃ to 492. 5℃. With the increase of the mesopitch modification temperature, the higher tap density can be achieved. The maximum specific capacitance of 103F/g can be achieved at the modification tempreture of 500℃. High modification temperature may lead high contents of ＂edge-layer＂ which can effictively enhance the surface specific capacitance of carbon materials.

关 键 词：中间相沥青 活性碳电极材料 比电容量 超级电容器 

分 类 号：TB34[一般工业技术—材料科学与工程]