AR沥青基双电层电容器电极材料的研究  

A Study on AR Pitch-based Electrode Materials for Electric Double-layer Capacitors

作　　者：刘小军[1] 崔华莉[2] 

机构地区：[1]陕西国防工业职业技术学院化学工程系,陕西西安710302 [2]延安大学化学与化工学院,陕西延安716000

出　　处：《精细化工》2011年第10期959-963,共5页Fine Chemicals

摘　　要：以AR(Aromatic Resin)沥青为原料,采用化学活化法制备出了高性能活性炭,通过N2吸附对其比表面积和孔隙结构进行了表征。此外,将所得活性炭作为电极组装成模拟电容器,利用循环伏安、恒流充放电等电化学测试方法研究了模拟电容器的电化学性能。结果表明,300次充放电循环后,模拟电容器平均充放电效率保持在90%以上,在50 mA/g充放电密度下,平均比电容为187.8 F/g;500 mA/g下的平均比电容为133.8 F/g;电容保持率为71.3%,电容量衰减为4.0%。High performance activated carbons were prepared by chemical activation method with AR （ Aromatic Resin） pitch as raw materials. The specific area and porosity of the activated carbon samples were studied by method of nitrogen adsorption. Furthermore, the simulative supereapacitors were assembled with the resultant carbons as electrodes, and their electrochemical performances were investigated by means of charge-discharge of constant current and cyclic voltammetry. The results show that the discharge efficiency of the simulative supereapacitors remained above 90% after 300 cycle tests, and the average specific capacitance reached 187. 8 F/g at 50 mA/g current density and 133.8 F/g at 500 mA/g current density. The specific capacitance retention was 71.3%, and the capacitance attenuation ratio was 4. 0%.

关 键 词：化学活化法 电极材料 活性炭 平均比电容 比表面积 功能材料 

分 类 号：TQ152[化学工程—电化学工业]