基于碳基纤维的柔性超级电容器

Carbon-Based Fibers for Flexible Supercapacitor

随着轻质、柔性、甚至可穿戴电子设备的快速发展,为其提供能源的储能系统也需要向柔性和高效方向发展。其中,纤维状柔性超级电容器由于具有高的功率密度、快的充放电速率、较好的柔性和可编织性、质轻、成本低及环境友好等优点而被认为是最有前途的候选者之一。碳材料具有优良的导电性、较高的比表面积、良好的耐腐蚀性和较低的密度,在常规超级电容器的发展过程中起到了不可替代的作用。同时,柔性超级电容器的快速发展也得益于碳材料研究的不断进步。因此,基于碳基纤维的超级电容器得到了越来越多的关注和广泛的研究。主要综述了基于碳基纤维(包括碳纤维、碳纳米管纤维和石墨烯纤维)柔性超级电容器的研究进展,重点对国内外的一些代表性研究工作进行了介绍和探讨。最后,提出了碳基纤维超级电容器研究过程中存在的问题并对未来的研究方向与发展趋势进行了预测和展望。

With the rapid development of lightweight,flexible and even wearable electronic devices,flexible and highly efficient energy storage devices are needed for their counterpart energy-storage systems. Among different sources,fiber shaped supercapacitors have been considered as one of the most promising candidates because of their significant advantages in power and energy densities,and unique properties of being flexible and weaveable,lightweight,low-cost,and environmentally friendly compared with current energy storage devices. Carbon materials with excellent electrical conductivity,high specific surface area,good corrosion resistance and low density play an irreplaceable role in the development of conventional supercapacitors and the rapid development of flexible supercapacitors also thanks to the advance of carbon materials. Therefore,carbon-based fiber shaped supercapacitors attracted increasing research attention. In this article,we review the recent research progress on carbon-based fiber shaped supercapacitor,including carbon fiber,carbon nanotube fiber and graphene fiber. Finally,we discuss the current challenges and further research trends of the carbon-based fiber shaped supercapacitor.