摘要
采用水热法制备了纯度较高的前驱体金属有机骨架化合物(Mn-MOF),并在不同温度下对其进行高温煅烧,得到了多孔碳/氧化锰(C/MnO)复合结构材料.运用X射线衍射仪、扫描电子显微镜对该多孔C/MnO材料进行结构表征,并通过循环伏安、恒流充放电等测试方法考察其作为电极材料的超级电容器的电化学性能.结果表明,制备的多孔C/MnO复合结构材料的比电容在800℃煅烧温度下电流密度为0.5 A·g^(-1)时达到最大,为375.0 F·g^(-1).此结果可为多孔C/MnO复合结构材料开辟新的研究方向.
A precursor Mn-based metal organic framework （MOF） was synthesized by the hydrothermal method. The porous carbon/manganese oxide （C/MnO） composites were obtained by calcinating the precursor Mn-MOF at different temperatures. The composite powder was characterized by X-ray diffraction and scanning electron microscope. The electrochemical properties of the supercapacitor applying the C/MnO composite as the electrode material were investigated by cyclic voltammetry method and galvanostatic charge-discharge method. The results show that the electrochemical performance of the porous C/MnO material is the best at 800℃ calcination temperature with the charge and discharge current density of 0.5 A · g^-1 , namely the specific capacitance reaches 375.0 F · g^-1. The result opens up new research directions for the porous C/MnO with composite structures.
出处
《应用技术学报》
2017年第3期267-273,共7页
Journal of Technology
基金
国家自然科学基金项目(51672177)资助
关键词
复合结构
碳/氧化锰
Mn金属有机骨架化合物
电化学性能
超级电容器
composite structure
carbon/manganese oxide
Mn metal organic framework
electrochemical performance
supercapacitor
