Okhay Olena, Tkach Alexander
TEMA-Center for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal.
CICECO-Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal.
Nanomaterials (Basel). 2021 May 8;11(5):1240. doi: 10.3390/nano11051240.
Thanks to the advanced technologies for energy generation such as solar cells and thermo- or piezo-generators the amount of electricity transformed from light, heat or mechanical pressure sources can be significantly enhanced. However, there is still a demand for effective storage devices to conserve electrical energy which addresses the wide range of large stationary applications from electric vehicles to small portable devices. Among the large variety of energy-storage systems available today, electrochemical energy sources and, in particular, supercapacitors (SC), are rather promising in terms of cost, scaling, power management, life cycle and safety. Therefore, this review surveys recent achievements in the development of SC based on composites of such carbon-derived materials as graphene (G) and reduced graphene oxide (rGO) with carbon nanotubes (CNT). Various factors influencing the specific capacitance are discussed, while specific energy and power as well as cycling stability of SC with G/rGO-CNT composite electrode materials are overviewed.
得益于太阳能电池、热发电机或压电发电机等先进的发电技术，从光、热或机械压力源转化而来的电量可得到显著提高。然而，对于用于储存电能的有效存储设备仍有需求，这涉及从电动汽车到小型便携式设备等广泛的大型固定应用。在当今众多可用的储能系统中，电化学能源，尤其是超级电容器（SC），在成本、规模、功率管理、生命周期和安全性方面颇具前景。因此，本综述调查了基于石墨烯（G）、还原氧化石墨烯（rGO）等碳基材料与碳纳米管（CNT）的复合材料开发超级电容器的最新成果。讨论了影响比电容的各种因素，同时概述了具有G/rGO-CNT复合电极材料的超级电容器的比能量、功率以及循环稳定性。
