POM@Fe-MOF衍生物的结构及其电化学性能  

Structure and electrochemical performances of POM@Fe-MOF derivatives

作　　者：张晚秋 何漩 赵雷[1,2] 李薇馨[1,2] 方伟 张富青 

机构地区：[1]武汉科技大学材料与冶金学院,湖北武汉430081 [2]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081 [3]武汉工程大学化学与环境工程学院,湖北武汉430074

出　　处：《武汉科技大学学报》2018年第1期44-51,共8页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(61604110);湖北省科技支撑计划(研发与示范类)项目(2015BCA253);中国博士后科学基金资助项目(2015M572210;2016M602376);武汉工程大学新型反应器与绿色化学工艺湖北省重点实验室基金资助项目(GCP201503)

摘　　要：采用溶剂热法将Keggin型H_3PW_(12)O_(40)作为次级结构单元引入Fe-MOF结构中,合成出具有花状结构的POM@Fe-MOF材料,以其为模板在不同工艺条件下制备出衍生物WO_2@FePO_4和WO_3@WC@C。借助SEM、XRD等分析了衍生物的表面形貌及物相结构,并将WO_2@FePO_4和WO_3@WC@C分别作为超级电容器的正、负极材料,利用三电极体系在浓度为6mol/L的KOH电解质溶液中对其电化学性能进行表征,在0.5A/g的充电电流密度下分别得到了68.6F/g和70F/g的最高比电容。Flower-like POM@Fe-MOF materials were prepared by inducing Keggin-type H_3PW12O_(40) as a secondary structural unit into Fe-MOF by solvothermal method.Based on the POM@Fe-MOF,WO_2@FePO_4 and WO_3@ WC@C were obtained by different heat treatment methods.The surface morphology and phase structure were characterized by SEM,XRD and so on.The prepared derivative materials were used as the positive and negative materials of the supercapacitor,respectively.The electrochemical properties were characterized by the three-electrode system and 6 M KOH as the electrolyte,and the obtained highest specific capacitance were 68.6 F/g and 70 F/g at the charge current density of 0.5 A/g.

关 键 词：POM@Fe-MOF WO2@FePO4 电极材料 超级电容器 比电容 电化学性能 

分 类 号：TM53[电气工程—电器]