Emerging CoMn-LDH@MnO2 electrode materials assembled using nanosheets for flexible and foldable energy storage devices

• 来源期刊: 能源化学
• 年，卷（期）: 2020,（6）
• 页码范围: 67-73
• 页数: 7页
• 语种: 英文

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 CoMn-LDH@MnO2 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 59.73W h kg-1 at 1000.09W 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.