College of Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China; National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
Small. 2014 Aug 13;10(15):3187-93. doi: 10.1002/smll.201303419. Epub 2014 Apr 14.
Thread-like electronic devices have attracted great interest because of their potential applications in wearable electronics. To produce high-performance, thread-like supercapacitors, a mixture of stable dispersions of single-walled carbon nanotubes and conducting polyaniline nanowires are prepared. Then, the mixture is spun into flexible yarns with a polyvinyl alcohol outer sheath by a one-step spinning process. The composite yarns show excellent mechanical properties and high electrical conductivities after sufficient washing to remove surfactants. After applying a further coating layer of gel electrolyte, two flexible yarns are twisted together to form a thread-like supercapacitor. The supercapacitor based on these two yarns (SWCNTs and PAniNWs) possesses a much higher specific capacitance than that based only on pure SWCNTs yarns, making it an ideal energy-storage device for wearable electronics.
由于其在可穿戴电子产品中的潜在应用，线状电子设备引起了极大的关注。为了生产高性能的线状超级电容器，制备了单壁碳纳米管和导电聚苯胺纳米线的稳定分散体的混合物。然后，通过一步纺丝工艺将混合物纺成具有聚乙烯醇外皮的柔性纱线。经过充分洗涤以去除表面活性剂后，复合纱线显示出优异的机械性能和高导电性。在施加进一步的凝胶电解质涂层之后，将两根柔性纱线扭绞在一起以形成线状超级电容器。基于这两种纱线（SWCNTs 和 PAniNWs）的超级电容器比仅基于纯 SWCNTs 纱线的超级电容器具有更高的比电容，使其成为用于可穿戴电子产品的理想储能装置。
