摘要
采用原位芳基重氮化反应对碳纳米管进行苯磺酸功能化,进而制备了聚吡咯/苯磺酸化碳纳米管复合材料(PPy/f-MWCNTs),通过透射电镜(TEM)及扫描电镜(SEM)测试发现,氢键诱导使聚吡咯成功地包覆在碳纳米管表面.循环伏安和恒流充放电测试结果表明,复合材料具有良好的电化学电容性能,当聚吡咯与苯磺酸化碳纳米管质量比为1:1时,复合材料在1.0A·g-1的电流密度下的比容量达266F·g-1,而且聚吡咯利用率比未功能化聚吡咯/碳纳米管(PPy/p-MWCNTs)和纯聚吡咯(PPy)提高了1倍以上.
Multi-walled carbon nanotubes were functionalized using in situ generated aryl diazonium and were then used to synthesize polypyrrole/benzenesulfonic functionalized multi-walled carbon nanotube composites（PPy/f-MWCNTs）.Transmission electron microscopy（TEM） and scanning electron microscopy（SEM） results indicated that a uniform PPy was successfully coated onto the sidewall of the f-MWCNTs,which was induced by hydrogen bonding.Cyclic voltammetry and galvanostatic charge/discharge measurements results showed that the composite possessed good electrochemical capacitive performance.The composite with m（PPy）：m（MWCNTs） of 1：1 had a capacity of 266 F·g^-1 at a current density of 1.0 A·g^-1,and the utilization of PPy was more than one time higher than polypyrrole/un-functionalized multi-walled carbon nanotube composites（PPy/p-MWCNTs） and pure PPy.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2009年第11期2199-2204,共6页
Acta Physico-Chimica Sinica
基金
国家重点基础研究发展计划(2007CB209703)
国家自然科学基金(20633040
20873064)
南京航空航天大学研究生创新基金(BCXJ08-08)资助项目~~
关键词
超级电容器
聚吡咯
碳纳米管
苯磺酸功能化
Supercapacitor
Polypyrrole
Carbon nanotube
Benzenesulfonic functionalization
