超级电容器
活性炭
储能
纳米颗粒
材料科学
电容
电极
碳纳米颗粒
纳米技术
化学工程
碳纤维
石墨烯
比表面积
复合数
碳化
作者
Kingsley Orisekeh,Basudeo Singh,Yusuf A. Olanrewaju,Moses Kigozi,Gina Odochi Ihekweme,Sadiq A. Umar,Vitalis C. Anye,Abdulhakeem Bello,Smrutiranjan Parida,W. O. Soboyejo
标识
DOI:10.1016/j.est.2020.102042
摘要
The need for flexible energy storage devices has stimulated the interest in the development of nanostructures in supercapacitors for energy storage. In this work, a hydrothermal method is used to optimize the growth of α-Fe2O3 nanoparticles on carbon cloth (CC) and activated carbon cloth (ACC). The resulting composition, morphologies and microstructures displayed interesting features that are suitable as electrodes material for electrochemical capacitors. These are integrated as binder-free, symmetric device, which were then assembled and tested. The device assembled with the activated carbon cloth exhibited higher electrochemical performance (specific capacity of 295.56 mAhg−1, specific energy of 37 WhKg−1 and specific power of 0.5 kWKg−1 in a 3 M KOH electrolyte at 1 A g−1. The device also had good capacitance retention of 96.6 % after 10000 charge-discharge cycles. The implications of the results are discussed for potential applications of the α-Fe2O3-ACC in supercapacitors for energy storage systems that address global energy needs.
科研通智能强力驱动
Strongly Powered by AbleSci AI