Investigating metal-organic framework as a new pseudo-capacitive material for supercapacitors

作     者：Long Kang Shi-Xiong Sun Ling-Bin Kong Jun-Wei Lang Yong-Chun Luo 

作者机构：State Key Laboratory of Advanced Processing and Recycling of Non-ferrous MetalsLanzhou University of Technology Laboratory of Clean Energy Chemistry and MaterialsLanzhou Institute of Chemical PhysicsChinese Academy of Science 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2014年第25卷第6期

页      面：957-961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] 

基　　金：supported by the National Natural Science Foundation of China(No.21203223) 

主　　题：Supercapacitor Pseudo-capacitive material Metal-organic framework Energy storage 

摘      要：A new application of metal organic framework （MOF） as a pseudo-capacitive material for supercapacitors is investigated. To this end, a simple nickel-based MOF, formulated Ni3（btc）2.12H2O, is synthesized via a hydrothermal reaction. As an electro-active material, such nickel-based MOF exhibits superior pseudo- capacitive behavior in KOH aqueous electrolyte with a high specific capacitance of 726 F g-1. Also, it displays good electrochemical stability with 94.6% of the initial capacitance over consecutive 1000 cycles. In addition, a simple asymmetric supercapacitor with a high energy density of 16.5 Wh kg-1 is successfully built using the nickel-based MOF as positive electrode and commercial activated carbon as negative electrode in KOH electrolyte.