超级电容器
热液循环
电化学
材料科学
活性炭
碳化
比表面积
化学工程
氧化物
碳纤维
电容
氧化铜
纳米技术
化学
复合材料
电极
催化作用
工程类
冶金
吸附
扫描电子显微镜
物理化学
复合数
有机化学
作者
Chi Zhang,Jialian Chen,Weixi Chen,Jinling Liu,Denglong Chen
标识
DOI:10.1016/j.est.2022.106600
摘要
In this work, the application of composite electrode materials composed of carbon materials and transition metal oxides as electrodes for supercapacitors is reported. In situ N-doped activated carbon (NAC) is prepared by carbonization and KOH activation using polyurethane as raw material, and then Cu(CH3NOO)2 as copper source is used to prepare hierarchical porous N-doped activated carbon (Cu2O/[email protected]) through impregnation adsorption and hydrothermal treatment. The results show that the Cu2O/[email protected] composites have high specific surface area and 3D hierarchical porous structure with Cu2O/CuO loading on the surface and in the pores of the activated carbon, which is favorable for the capacitive performance. The Cu2O/[email protected] exhibits a remarkable specific capacitance of 1393.4 F g−1 at a current density of 0.5 A g−1. Therefore, the composite electrode materials of activated carbon and copper oxide represent good prospects for application in supercapacitors.
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