Abstract Activated carbon (AC) was prepared from waste cumin utilising the chemical activation method. The cumin was separately washed with HCl and HF to remove minerals. The surface areas of AC of the acid washed samples (AC-HCl, AC-HF) were 1468 and 1472 m2/g, compared with 1361 m2/g for AC obtained directly from the precursor. Washing with the acids improved the supercapacitor performance through a significant decrease in the internal resistance of electrodes. The specific capacitances of electrodes using ACs prepared from acid washed samples (HCl and HF) were 127F/g and 155F/g at current density of 1.5 mA/cm2, compared with 117 F/g from the unwashed precursor.

中文翻译：

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微波预处理脱矿（废弃）孜然植物合成分级多孔活性炭电极的超级电容器性能

摘要 以废孜然为原料，采用化学活化法制备活性炭（AC）。孜然分别用 HCl 和 HF 洗涤以去除矿物质。酸洗样品（AC-HCl、AC-HF）的活性炭表面积分别为 1468 和 1472 平方米/克，而直接从前体获得的活性炭的表面积为 1361 平方米/克。用酸清洗通过显着降低电极的内阻来改善超级电容器的性能。使用由酸洗样品（HCl 和 HF）制备的 AC 的电极的比电容在 1.5 mA/cm2 的电流密度下分别为 127F/g 和 155F/g，而未清洗前驱体的比电容为 117F/g。