聚吡咯-二氧化钛纳米复合材料的制备及其电化学性能
首发时间:2011-08-08
摘要:采用恒电位电沉积方法制备了聚吡咯-二氧化钛纳米复合材料,扫描电镜、红外光谱和拉曼光谱的表征结果表明,聚吡咯可以在二氧化钛纳米管壁面上均匀沉积,形成同轴异质纳米管结构的聚吡咯-二氧化钛;循环伏安测试结果表明,聚吡咯-二氧化钛纳米复合电极材料的比电容,比能量和比功率分别为185 F g-1, 9.25 Wh Kg-1 和 1.11 KW Kg-1。高效电化学储电性能表明这种纳米复合电极材料可以很好地应用于超级电容器。
关键词: 聚吡咯-二氧化钛 纳米复合物 恒电位沉积 电化学电容
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Preparation and electrochemical properties of polypyrrole-titania nanocomposite
Abstract:The polypyrrole-titania nanocomposite was prepared through a potentiostatic deposition method. The morphology and microstructure of polypyrrole-titania were characterized by scanning electron microscopy, infrared spectroscopy and Raman spectroscopy. It indicated that polypyrrole was fully deposited on titania nanotube walls to form nanotube hybrid structure, demonstrating a uniformity characteristic and high conductivity as well. The specific capacitance, specific energy and specific power of polypyrrole-titania by cyclic voltammetry measurement were determined to be 185 F g-1, 9.25 Wh Kg-1 and 1.11 KW Kg-1, respectively. Such a nanocomposite electrode material contributed an effective electrochemical energy stroage for the supercapacitor application.
Keywords: Polypyrrole-titania Nanocomposite Potentiostatic deposition Electrochemical capacitance
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