高比电容MOF衍生的介孔球状Co_(3)O_(4)/NiO/CuO  

Mesoporous Spherical Co 3O 4/NiO/CuO Derived from MOF with High Specific Capacitance

作　　者：高雅倩 赵亚娟[1] 谢会东[1] 胡昌宇 王逸博 王康康[1] 杨厂[2] GAO Yaqian;ZHAO Yajuan;XIE Huidong;HU Changyu;WANG Yibo;WANG Kangkang;YANG Chang(School of Chemistry and Chemical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Engineering Comprehensive Training Center,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学化学与化工学院,西安710055 [2]西安建筑科技大学工程综合实训中心,西安710055

出　　处：《材料导报》2024年第12期1-7,共7页Materials Reports

基　　金：山东省重大科技创新项目(2019JZZY010343)。

摘　　要：通过溶剂热合成了CoNiCu-MOF金属有机框架化合物,并通过后续的煅烧制备了Co_(3)O_(4)/NiO/CuO电极材料。对材料的形貌和比表面积进行表征,并测量了材料在不同扫描速率下的循环伏安曲线和不同电流密度下的恒流充放电曲线以及循环稳定性。将所得材料作为正极,活性炭作为负极组装了超级电容器器件,测量了器件的电化学性能。结果表明:Co_(3)O_(4)/NiO/CuO材料具有多孔结构和较大的可用比表面积(50.24 m2·g^(-1))。当电流密度为1 A·g^(-1)时,Co_(3)O_(4)/NiO/CuO的比电容高达3682.2 F·g^(-1)。所组装的Co_(3)O_(4)/NiO/CuO//AC非对称超级电容器的能量密度在1.45 V的电势窗口内达到186.8 Wh·kg^(-1),功率密度高达7249.8 W·kg^(-1)。Co_(3)O_(4)/NiO/CuO是一种性能优良的超级电容器电极材料,具有广阔的应用前景。CoNiCu-MOF metal-organic frames were synthesized by a solvothermal method,and the Co_(3)O_(4)/NiO/CuO electrode materials were prepared by a subsequent calcination of CoNiCu-MOF.The morphology,specific surface area,cyclic voltammetric curves at different scanning speeds,galvanostatic charge/discharge curves at different current densities,and the cyclic stability of the materials were measured.An asymmetric supercapacitor device was assembled with Co_(3)O_(4)/NiO/CuO and activated carbon as the positive and negative electrodes,respectively,and its electrochemical properties were measured.Results showed that the Co_(3)O_(4)/NiO/CuO material had a porous structure and a large specific surface area(50.24 m 2·g^(-1)).The specific capacitance of Co_(3)O_(4)/NiO/CuO was as high as 3682.2 F·g^(-1)at a current density of 1 A·g^(-1).The maximum energy density of the assembled Co_(3)O_(4)/NiO/CuO∥AC asymmetric supercapacitor achieved up to 186.8 Wh·kg^(-1)within a potential window of 1.45 V and a power density of 7249.8 W·kg^(-1).The excellent performance of Co_(3)O_(4)/NiO/CuO as a supercapacitor electrode material makes it have a wide application prospect as energy storage devices.

关 键 词：超级电容器 金属有机框架 电化学 活性炭 

分 类 号：O614[理学—无机化学]