Mn^(2+)掺杂聚苯胺的制备及其电容特性研究  

Preparation and electrochemical performance of polyaniline doped with Mn^(2+)

作　　者：徐惠[1] 张俊龙[1] 陈泳[1] 陆海林[1] 庄君霞[1] 

机构地区：[1]兰州理工大学石油化学院,兰州730050

出　　处：《功能材料》2014年第7期7047-7050,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51062011)

摘　　要：以界面聚合法制备了聚苯胺和Mn2+掺杂聚苯胺复合材料。利用红外光谱(FT-IR)、X射线衍射(XRD)、场发射扫描电镜(SEM)对其结构和形貌进行了表征。在0.5mol/L H2SO4中,通过循环伏安法(CV)、恒流充放电(CP)、交流阻抗谱法(EIS)对电极材料的电化学性能进行了测试。结果表明,当以5mA/cm2的电流密度放电时,Mn2+化学掺杂聚苯胺的电极比电容达403F/g,远高于单纯的聚苯胺,是一种具有优良应用前景的超级电容器材料。The electrodes of polyaniline and polyaniline doped with Mn2 ＋ （PANI/Mn2 ＋ ）were prepared via inter-facial polymerization method.The structure and morphology of PANI and PANI/Mn2 ＋ films were characterized by Fourier transform infrared （FT-IR）,X-ray diffraction （XRD）and scanning electron microscopy （SEM）.The electrochemical properties of PANI and PANI/Mn2 ＋ films were investigated by cyclic voltammetry,galvanosta-tic charge-discharge test and electrochemical impedance spectroscopy （EIS）in 0.5 mol/L H 2 SO 4 electrolyte in three-electrode system.The results suggest that the growth rate of PANI was greatly increased,which may arise from the interactions between PANI chains and Mn2 ＋ .The PANI/Mn2 ＋ films show a larger specific capac-itance of 403 F/g at a current density of 5 mA/cm2 and lower resistance compared with the pure PANI film.The results indicate that the PANI/Mn2 ＋ films were promising material for supercapacitors.

关 键 词：聚苯胺 MN2 + 界面聚合法 电化学活性 比电容 

分 类 号：TB332[一般工业技术—材料科学与工程]