Hydrothermal Synthesis of Polyoxovanadate-based MOFs Microsphere as Supercapacitor

作     者：ZHU Mei-Hua WU Yi-Wei GUO Hong-Xu 朱梅花;吴屹伟;郭鸿旭

作者机构：College of Chemistry and Environment Minnan Normal University 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2019年第38卷第4期

页      面：581-586页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by the Natural Science Foundation of Fujian Province(No.2017J01420) 

主　　题：polyoxovanadate microsphere supercapacitor electrode material 

摘      要：Polyoxovanadate-based MOFs microsphere electrode material, [Ni_2(4,4?-bipyridine)_3(H_2O)_2V_4O_(12)]·2.5 H_2O, was synthesized through a simple hydrothermal method, and then characterized through FT-IR, XRD and SEM. Electrochemical properties of the sample as supercapacitor electrodes in aqueous electrolyte were developed and studied by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy techniques. Results showed that a high specific capacitance of 152.36 F g^(-1) at current density of 1 A g^(-1) in 2 M KOH electrolyte, and 97.62% retention after 2500 charge-discharge cycles at current density of 4 A g^(-1), which is promising for applications in supercapacitors.