黑龙江科技大学学报2025，Vol.35Issue(5)：689-696,8.DOI:10.3969/j.issn.2095-7262.2025.05.001
KOH活化提质焦粉结构调控及超级电容器电极材料电化学性能
Structural regulation of KOH-activated upgraded coke powder and electrochemical performance of supercapacitor electrode materials
摘要
Abstract
This paper aims to explore the efficient electrode materials for supercapacitors.By taking refined coke powder as the raw material and KOH as the activator,the study consists of preparing the ac-tivated carbon materials with high specific surface area and excellent electrochemical performanc;analy-zing the structural characteristics behind the activated carbon material by scanning electron microscopy,nitrogen adsorption-desorption,X-ray diffraction,and infrared spectroscopy;and investigating the cyclic voltammetry,electrochemical impedance,and galvanostatic charge-discharge performance of the activated carbon materials with a three-electrode system in a 6 mol/L KOH electrolyte.The results show that the a-mount of KOH significantly affects the electrochemical performance of the activated carbon materials.With the increase of the ratio of alkali to carbon,the performance gradually improves.As happens when the optimized alkali-to-carbon ratio is 2∶1,the specific surface area of the activated carbon material rea-ches 1 744.166 m2/g,demonstrating an excellent pore structure.At a current density of 0.1 A/g,the specific capacitance of the material reaches 169.375 F/g,indicating a high energy storage capacity.Af-ter 5 000 charge-discharge cycles,the specific capacitance retention rate remains as high as 98%,dem-onstrating excellent cycling stability.Optimizing the amount of the activator can effectively enhance the electrochemical performance of the activated carbon electrode materials.关键词
提质焦粉/活性碳材料/超级电容器/电极材料Key words
upgraded coke powder/activated carbon materials/supercapacitor/electrode material分类
化学化工引用本文复制引用
熊楚安,柯连强,王楠..KOH活化提质焦粉结构调控及超级电容器电极材料电化学性能[J].黑龙江科技大学学报,2025,35(5):689-696,8.基金项目
黑龙江省省属高等学校基本科研业务费项目(2022-KYYWF-0568) （2022-KYYWF-0568）
