黑龙江科技大学学报2024，Vol.34Issue(1)：40-46,7.DOI:10.3969/j.issn.2095-7262.2024.01.007
煤基针状焦制备超级电容器电极材料及其电化学性能
Electrochemical properties of supercapacitor electrode materials from coal-based needle coke
摘要
Abstract
This paper is an effort to explore the electrochemical properties of coal-based needle coke.The study involves using medium-temperature coal-based green needle coke as raw material and KOH as the activator;preparing porous carbon materials used for supercapacitors with thermal treatment method;characterizng the samples by SEM,XRD,infrared spectroscopy and conducting the nitrogen adsorption-de-sorption test,and electrochemical performance tests on carbon electrodes including cyclic voltammetry,electrochemical impedance spectroscopy,and galvanostatic charge-discharge;and studying the effect of KOH additive amount on the electrochemical performance of carbon electrodes.The results show that the specific capacitance reaches 222.83 F/g with the ratio of alkali and carbon by 2∶1 and the current densi-ty at 0.1 A/g;the capacitance retention rate can reach 93.2%with the increase of the current density from 0.5 A/g to 10 A/g;and after 10 000 cycles at 5 A/g,the specific capacitance remains at 100%.关键词
煤基针状焦/电极材料/活化/电化学性能Key words
coal-based needle coke/electrode material/activation/electrochemical performance分类
化学化工引用本文复制引用
熊楚安,王楠,封迈..煤基针状焦制备超级电容器电极材料及其电化学性能[J].黑龙江科技大学学报,2024,34(1):40-46,7.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）
