化学法制备高容量导电聚苯胺  

High-capacity Conducting Polyaniline Synthesize by Chemical Method

作　　者：王芳平[1] 周妥记[2] 钟新仙[2] 李庆余[2] 

机构地区：[1]中国铝业股份有限公司郑州研究院,郑州450041 [2]广西师范大学化学化工学院,桂林541004

出　　处：《功能材料与器件学报》2011年第6期606-610,共5页Journal of Functional Materials and Devices

摘　　要：在室温下,采用化学原位聚合法制备得到超级电容器用导电聚苯胺(PANI),并采用扫描电子显微镜(SEM)和X-射线衍射(XRD)对其形貌和结构进行了表征。以制备的PANI为活性物质作为电极材料,1mol/L Na_2SO_4水溶液为电解液组装成扣式超级电容器,通过循环伏安和恒电流充放电测试研究其电化学性能。结果表明,制备的导电PANI具有高的比容量、良好的功率特性和较好的循环性能。在电流密度为5mA/cm^2下的单电极比容量达451 F/g,1000次循环后容量仍保持在208 F/g。电流密度为20mA/cm^2下的单电极比容量仍有230F/g。能量密度最高达7.35Wh/kg。Polyaniline was prepared by chemical in -situ polymerization at ambient temperature. The morphology and structure of polyaniline were characterized by scanning electron microscopy （SEM） and X - ray diffraction （XRD）. Symmetric redox supercapacitor was assembled with the PANI as active electrode material and 1 mol/L Na2SO4 aqueous solution as electrolyte. The capacitive performances of the supercapacitor were tested with cyclic voltammetry and galvanostatic charge - discharge. The results show that the PANI product has high capacity, good power characteristics and good cycle performance. The specific capacitance of the PANI electrode is about 451 F/g at the charge - discharge current density of 5 mA/cm2. After 1000 charge - discharge cycles the specific capacitance of the PANI electrode is about 208 F/g. The specific capacitance of the PANI electrode is about 230 F/g at the charge - discharge current density of 20 mA/cm2. Energy density up to 7.35 Wh/kg.

关 键 词：化学原位聚合法 高容量导电聚苯胺 超级电容器 电化学性能 

分 类 号：O633.2[理学—高分子化学]