以柚子皮水热炭为前驱体,KOH为活化剂,800℃活化制备层次孔炭电极材料.采用扫描电子显微镜(SEM)、N2吸附法对活性炭的表面形貌和孔结构进行了表征,并评价了其在无机电解液体系(3 mol/L KOH)中的电化学性能.结果表明,碱碳比为1∶1时制备的活性炭呈蜂窝状结构,其比表面积、总孔容分别达到1421 m2/g和0.7626 cm3/g,相应的电极材料具有典型的双电层电容特性,质量比电容和体积比电容分别达到226 F/g和250 F/cm3(电极片密度为1.1 g/cm3),1000次循环之后电容保持率达到91.45％.与柚子皮直接活化制备的电极材料相比,质量比电容和体积比电容分别增加了31.40％和37.36％.
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