摘要
绿色可再生的废弃香菜富含异质元素且种植广泛容易获取,是一种有前途的碳源.通过简便的碳化活化处理,成功合成了香菜衍生的多孔碳材料(CDPCs).并通过调整KOH与碳材料的活化比例,制备了三种混合比例的样品,探索了最佳超级电容器性能的电极材料.在三电极系统下进行电化学测试表明,CDPC4-1电极在1 A·g-1电流密度下,比电容可达到316 F·g-1;电流密度 15 A·g-1时,电容仍保持 70.9%,且在此电流密度下经过 5 000次充放电测试后,仍能保持99.8%的初始电容.该绿色环保可再生的电极材料在超级电容器储能领域具有广阔前景.
Abstract
Waste cilantro is a promising carbon source as it is rich in heterogeneous elements and widely grown and easily accessible.Coriander-derived porous carbon materials(CDPCs)were successfully synthesized by a facile carbonization activation treatment.By adjusting the activation ratio of KOH and carbon materials,three mixed-ratio samples were prepared to explore the electrode materials for optimal supercapacitor performance.Electrochemical tests performed under the three-electrode system showed that the specific capacitance of the CDPC4-1 electrode could reach 316 F·g-1 at a current density of 1 A·g-1.The capacitance remained 70.9%at current densities up to 15 A·g-1,after 5 000 charge/discharge tests at this current density,99.8%of the initial capacitance was maintained.This green and renewable electrode material has a broad prospect in the field of supercapacitor energy storage.
维普
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