羧基化石墨烯基导电聚吡咯复合材料的超电容性能  

Supercapacity of Carboxyl Graphene-Based Electroconductive Polypyrrole Composite

作　　者：李娜[1] 肖迎红[1] 鲁嘉[1] 王延平[1] 许崇正[1] 杨小弟[1] 

机构地区：[1]江苏省新型动力电池重点实验室,南京师范大学化学与材料科学学院,南京210097

出　　处：《应用化学》2013年第3期354-359,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(20875047);水利部(201201018);江苏省优势学科资助项目

摘　　要：制备了羧基化石墨烯基聚吡咯复合物(CG/ppy)修饰电极,用循环伏安法和交流阻抗法研究了修饰电极的电化学行为,并对修饰电极进行了恒流充放电以及循环稳定性测试。实验结果表明,CG/ppy显著提高了玻碳电极在电解液中的电流响应,降低了玻碳电极在电解液中的电阻,修饰电极的比电容可达584 F/g,且经过1000次循环后比电容仍保持初始值的81%。首次将羧基化石墨烯基聚吡咯应用于电化学领域,证实了CG/ppy修饰电极在该领域中有潜在的应用价值。Carboxyl graphene-based polypyrrole （CG/ppy） modified electrode was prepared anO its electrochemical properties were investigated via cyclic voltammetry and AC impedance. Additionally, galvanostatic charge-discharge tests and cycle stability tests were performed. Experimental results show that the CG/ppy significantly improves the current response of the bare electrode and reduces the resistance of the bare electrode in the supporting electrolyte. The specific capacitance of the CG/ppy modified electrode is up to 584 F/g and retains 81% of the initial value after 1000 cycles. Therefore CG/ppy modified electrode has potential application value in the field of electrochemical area.

关 键 词：羧基化石墨烯 聚吡咯 修饰电极 超级电容器 

分 类 号：O646[理学—物理化学]