首页> 外文会议>Annual Conference of the Chinese Society of Micro-Nano Technology >High performance supercapacitor electrode materials based on activated carbon and conducting polypyrrole
【24h】

High performance supercapacitor electrode materials based on activated carbon and conducting polypyrrole

机译:基于活性炭和导电聚吡咯的高性能超级电容器电极材料

获取原文
获取外文期刊封面目录资料

摘要

The traditional supercapacitor is made of activated carbon, which shows lower specific capacity and higher resistance. In this paper, we demonstrated preparation of high performance supercapacitor electrode materials based on activated carbon and conducting polymer polypyrrole (ppy). In order to obtain well dispersion of ppy in activated carbon for lower resistance of electrode, a high-speed agate beads milling process was used to mix the ppy and porous carbon powder. By controlling the synergistic effect between ppy and activated carbon, a uniform structure composite electrode was prepared and the performance of this composite based supercapacitor was investigated. Compared with pure activated electrode, the obvious electrochemical performance improvement was achieved in composite electrode after the introduction of ppy. It has been found that electrode based on this composite has a maximum specific capacitance about 159 F/g, which was higher than pure activated carbon, and exhibited low resistance about 3.35 Ohm. The cycle performance results revealed that a 142 F/g (more than 88% of initial capacitance) capacitance was kept in composite electrode after 1000 cycles charge/discharge process. We conclude that the excellent synergistic effect between activated carbon and ppy resulted in superior electrochemical performance of composite electrode. Furthermore, the simple preparing method of composite electrode for supercapacitor assembly has potential commercial applications.
机译:传统的超级电容器由活性炭制成,其显示出较低的特定容量和更高的耐受性。在本文中,我们证明了基于活性炭和传导聚合物聚吡咯(PPY)的高性能超级涂物电极材料的制备。为了在活性炭中获得PPY的良好分散,用于低电阻的电极,使用高速搅拌珠粒铣削过程混合PPY和多孔碳粉。通过控制PPY和活性炭之间的协同效应,制备均匀的结构复合电极,并研究了基于复合的超级电容器的性能。与纯活性电极相比,在引入PPY之后,在复合电极中实现了明显的电化学性能改善。已经发现,基于该复合材料的电极具有约159f / g的最大特定电容,其高于纯活性炭,并且表现出约3.35欧姆的低电阻。循环性能结果显示,在1000次循环充电/放电过程之后,在复合电极中保持142 f / g(初始电容的88%以上的初始电容)电容。我们得出结论,活性炭和PPY之间的优异协同效应导致复合电极的卓越电化学性能。此外,超级电容器组件的复合电极的简单准备方法具有潜在的商业应用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号