聚苯胺碳纳米纤维复合材料的制备及电容性能.doc

Received:June42010;Revised:
*Correspondingauthor.Email：[e-mail];Tel:[phone].
TheprojectwassupportedbytheInnovationFoundationofJiangxiNormalUniversity(YJS2010059)
江西师范大学校创新基金(YJS2010059)资助项目

[研究论文]
聚苯胺/碳纳米纤维复合材料的制备及电容性能

张雷勇1何水剑1陈水亮1郭乔辉2侯豪情1,*
(1江西师范大学化学化工学院,南昌330022；2中国科学院长春应用化学研究所,长春130022)

摘要:采用原位聚合法制备了聚苯胺/碳纳米纤维(PANI/CNF)复合材料,用傅里叶变换红外(FT-IR)光谱、高温微量热天平(TGA)、扫描电镜(SEM)和孔分布及比表面积测定仪研究了复合材料的表面官能团、热性能、表面形貌及比表面积,并运用循环伏安(CV)法和计时电位法测试了PANI/CNF布作为电极材料的电化学性能.研究结果表明:PANI/CNF复合材料具有粗糙的毛刺结构,PANI沿碳纳米纤维均匀分布;PANI/CNF电极氧化还原反应的可逆性良好;在100mA·g-1电流密度下,当PANI含量为44.4%(W)时复合材料比电容量高达587.1F·g-1,比能量为66.1Wh·kg-1,电流密度为800mA·g-1时比功率可达1014.2W·kg-1;在5A·g-1的电流密度下,1000次循环充放电后,复合材料的比电容量衰减28%.PANI/CNF复合材料具有良好的导电性和快速充放电能力,是一种优良的电容器电极材料.
关键词:碳纳米纤维布;聚苯胺;电化学性能;比电容量;复合材料
中图分类号:O646
PreparationandElectrochemicalPropertiesofPolyaniline/CarbonNanofibersCompositeMaterials
ZHANGLei-Yong1HEShui-Jian1CHENShui-Liang1GUOQiao-Hui2HOUHao-Qing1,*
(1CollegeofChemistryandChemicalEngineering,JiangxiNormalUniversity,Nanchang330022,P.R.China;2ChangchunInstituteofAppliedChemistryChineseAcademyofSciences,Changchun,P.R.China)
Abstract:Polyaniline/CarbonNanofiber(PANI/CNF)compositematerialswerepreparedbyin-situpolymerization.ThecompositematerialswerecharacterizedbyFouriertransforminfrared(FT–IR)spectroscopy,Thermogravimetricanalyzer(TGA),scanningelectronmicroscopy(SEM)andBrunauer-Emmelt-Telleranalysis.Cyclicvoltammetry(CV)andgalvanotacticcharge/dischargemethodswereusedtostudytheelectrochemicalpropertiesofthePANI/CNFcompositematerials.ResultsshowedthatcompositematerialspresentedroughsurfacewithburrystructureofPANIuniformlydistributedontheCNFbythismethod.Thecompositematerialsshowedgoodreversibilityofredoxreactionaselectrodes.ThespecificcapacitanceofPANI/CNFcontaining44.4%PANIwas587.1F·g-1,thespecificenergywas66.1Wh·kg-1atacurrentdensityof100mA·g-1,andthespecificpowerwas1014.2W·kg-1atacurrentdensityof800mA·g-1.Moreover,thespecificcapacitanceofPANI/CNFonlydecreased28%after1000charge/discha