聚苯胺/聚吡咯复合薄膜电极的制备及其超电容和耐腐蚀性  

Capacitance Characteristics and Corrosion Resistance of Polyaniline/Polypyrrole Composite Film Prepared by Electrochemical Method

作　　者：徐惠[1] 李俊玲[1] 彭振军[1] 庄君霞[1] 张俊龙[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《高分子材料科学与工程》2013年第10期133-137,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51062011);甘肃省教育厅项目

摘　　要：在聚苯胺(PANI)和聚吡咯(PPy)的相应单体溶液中,采用循环伏安法(CV)在不锈钢基体(SS)上分层聚合制备了具有聚苯胺/聚吡咯复合薄膜(PANI/PPy/SS)的电极材料。用傅里叶变换红外光谱(FT-IR)、X射线衍射(XRD)对其结构进行了表征。在0.5mol/L H2SO4中,对PANI/PPy/SS电极材料进行了循环伏安法、恒流充放电、交流阻抗谱(EIS)等电化学性能测试,并用塔菲尔曲线(Tafel)研究了其耐腐蚀性能。结果表明,当电流密度为5mA/cm2时,PANI/PPy/SS电极材料比电容达747.5F/g,且复合膜的腐蚀电位相对于单纯的PANI、PPy薄膜分别正移了0.064V、0.117V,表现出较好的耐腐蚀性,是一种应用前景很好的超级电容器材料。Polyaniiine/polypyrrole（PANI/PPy） composite films were synthesized on a stainless steel substrate by cyclic voltammetry （CV） in the corresponding monomer solution. The structure of the composite film were characterized by Fourier transform infrared （FTIR）, X-ray diffraction （XRD）. The electrochemical supercapacitor properties of the composite film were investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy （EIS） in 0.5mol/L H2SO4 electrolyte, and the corrosion resistance of the composite film was researched simply by Tafel curves. The results suggest that the specific capacitance of the composite film is up to 747.5 F/g at a current density of 5 mA/cm2, and the corrosion potential of the composite film shift positively by 0.064V, 0. 117V compared with that of the pure PANI, PPy film, respectively, which suggest that the composite films turn out to be a promising material for supercapacitor.

关 键 词：聚苯胺 聚吡咯复合薄膜 超级电容器 比电容 耐腐蚀 

分 类 号：TB34[一般工业技术—材料科学与工程]