超级电容器
电容
储能
电化学
材料科学
电极
热液循环
电化学储能
纳米技术
化学工程
能量密度
电池(电)
光电子学
纳米片
电解质
化学
工程物理
量子力学
物理
工程类
物理化学
功率(物理)
作者
Yue Zhao,Jiafeng He,Meizhen Dai,Depeng Zhao,Xiang Wu,Baodan Liu
标识
DOI:10.1016/j.jechem.2019.09.027
摘要
CoMn layered double hydroxides (CoMn-LDH) are promising electrode materials for supercapacitors because of their excellent cyclic stability. However, they possess relatively low capacitances. In this work, hybrid [email protected]2 products grown on Ni foams were obtained through a facile hydrothermal method. The as-synthesized samples employed as electrodes deliver a specific capacitance of 2325.01 F g−1 at 1 A g−1. An assembled asymmetric supercapacitor using these products as positive electrodes shows a maximum energy density of 59.73 W h kg−1 at 1000.09 W kg−1. The prominent electrochemical performance of the as-prepared electrodes could be attributes to hierarchical structures. These findings suggest that hybrid structures might be potential alternatives for future flexible energy storage devices.
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