CoMn-MOF衍生MnCo_(2)O_(4)电极材料的制备及其超级电容器性能研究

Preparation of CoMn-MOF-derived MnCo_(2)O_(4) electrode material and its supercapacitor properties

采用溶剂热法制备了CoMn-MOF-74前驱体,并通过高温煅烧的方法制备其衍生物MnCo_(2)O_(4)。利用X射线衍射、扫描电镜对其结构和形貌进行表征。利用电化学工作站进行循环伏安、恒电流充放电和电化学阻抗测试。测试结果表明,在电流密度为1 A/g时,CoMn-MOF-74的比电容为120.4 F/g,而其衍生物MnCo_(2)O_(4)具有152.6 F/g的比电容,表现出了更好的电容性能。

In this paper,the precursor of CoMn-MOF-74 was prepared by solvothermal method,and its derivative MnCo_(2)O_(4) was prepared by high-temperature calcination method.The structure and morphology were characterized by X-ray diffraction and scanning electron microscopy.Cyclic voltammetry,galvanostatic charge/discharge and electrochemical impedance measurements were tested by electrochemical workstation.The test results show that when the current density is 1 A/g,the specific capacitance of CoMn-MOF-74 is 120.4 F/g,and its derivative MnCo_(2)O_(4) has a specific capacitance of 152.6 F/g,showing better capacitance performance.