应用于超级电容器的碳原子线电极的电容性能研究  

Capacitance Performance of Carbon Atom Wires Electrode for Supercapacitors

作　　者：陈巧玲[1] 薛宽宏[2] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009 [2]南京师范大学化学与环境科学学院,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2010年第3期61-65,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金(20473039)

摘　　要：以新型碳材料——碳原子线为超级电容器电极材料.碳原子线由天然高分子淀粉高温催化热解而得,并通过浓硝酸处理的方法对其进行表面官能化.酸处理后碳原子线电极的电容性能测试采用循环伏安法,恒流充放电法和交流阻抗法.实验结果表明,酸处理后的碳原子线电极显示出较高的电容性能,在5 mol/L硫酸水溶液中,在0.2 A/g的放电电流密度下,该电极的比电容可达256 F/g,同时具有较低的等效串联电阻和较好的循环稳定性.A novel carbon material named carbon atom wires（CAW） is used for electrode material in supercapacitors.The CAW is fabricated by the pyrolysis of starch catalyzed by Fe and treated by concentrated nitric acid to be surface functionalized.The capacitance performance of the treated-CAW electrode is investigated by use of the cyclic voltammetry,galvanostatic charge/discharge and AC impedance methods.The results showed that the specific capacitance of 256F/g of the electrode is achieved with the discharge current density of 0.2A/g in the solution of 5mol/L H2SO4.In addition,the treated-CAW electrode is found to have low equivalent series resistance（ESR） and good cycling stability.

关 键 词：碳原子线 超级电容器 电容性能 

分 类 号：O646[理学—物理化学]