原位聚合法制备Co^(2+)掺杂聚苯胺及电化学性能研究  

Electrochemical performance of polyaniline doped with Co^(2+) synthesized via in-situ polymerization method

作　　者：吴军霞 徐惠[2] WU Jun-xia;XU Hui(Department of Mining and Metallurgy Engineering,Baiyin Institute of Mining and Metallurgy,Baiyin 730900,China;College of Petrochemical Technology,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]白银矿冶职业技术学院矿冶工程系,甘肃白银730900 [2]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《应用化工》2018年第S02期311-316,共6页Applied Chemical Industry

基　　金：环保型过渡金属离子掺杂聚苯胺超级电容性能及掺杂机理研究(2016A-148);铜电解废液脱铜制备超细铜粉的关键技术研究与应用(2018A-290)。

摘　　要：在含有0.3 mol/L CoSO_(4)·6H_(2)O的H_(2)SO_(4)溶液中,以苯胺为单体,采用原位聚合法制备不同浓度H_(2)SO_(4)掺杂PANI/0.3MCo^(2+)复合材料。利用红外光谱(FTIR)、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。以0.5 mol/L的H_(2)SO_(4)为电解质溶液,组装三电极体系,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3mA/cm^(2)电流密度放电时,0.5mol/L H_(2)SO_(4)化学掺杂PANI/0.3MCo^(2+)电极材料比电容可达386F/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。0.3MCo^(2+)doped PANI electrodes were synthesized via in-situ polymerization method in different concentration of H_(2)SO_(4) with aniline(An)as monomer and CoSO_(4)·6H_(2)Oas dopants.The structure and morphology were characterized by Fourier transform infrared(FTIR),X-ray diffraction(XRD)and Scanning electron microscopy(SEM).The electrochemical properties of the electrode materials were investigated by cyclic voltammetry,galvanostatic 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 PANI/0.3MCo^(2+)synthesized in 0.5mol/L H_(2)SO_(4) show a larger specific capacitance of 386 F/g at a current density of 3 mA/cm^(2) and lower resistance compared with the pure PANI.The results indicate that 0.5 mol/L H_(2)SO_(4) chemical doped PANI/0.3MCo^(2+)are promising material for supercapacitors.

关 键 词：超级电容器 聚苯胺 Co^(2+) 原位聚合法 电化学活性 

分 类 号：O646[理学—物理化学]