一种高容量的层状Co-MOF基超级电容器电极材料  

A Layered Co-MOF Based Electrode Material of Supercapacitor with High-Capacity

作　　者：戎红仁[1] 王先梅 魏英华 陈晓娟 赖梨芳[1] 刘琦[1] RONG Hong-Ren;WANG Xian-Mei;WEI Ying-Hua;CHEN Xiao-Juan;LAI Li-Fang;LIU Qi(School of Petrochemical Engineering and Jiangsu Provincial Key Laboratory of Fine Petrochemicals,Changzhou University,Changzhou,Jiangsu 213164,China)

机构地区：[1]常州大学石油化工学院,江苏省精细石油化工重点实验室,常州213164

出　　处：《无机化学学报》2021年第12期2227-2234,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21975034);江苏省精细石油化工重点实验室开放课题基金资助。

摘　　要：通过简单的溶剂热反应合成了一种钴基层状MOF([Co(4,4'-bpy)(tfbdc)(H2O)2],Co-BTH,4,4'-bpy=4,4'-联吡啶,H2tfbdc=四氟对苯二甲酸),并考察了其作为超级电容器电极材料的性能。研究结果表明:Co-BTH电极具有良好的赝电容性能,包含高比电容和较好的倍率性能。在1 A·g^(-1)电流密度下和1 mol·L^(-1) KOH溶液中,其比电容最大可达2316 F·g^(-1)。在2 A·g^(-1)的电流密度下,循环1000次后,电极的比电容仍然还有847 F·g^(-1)。良好的赝电容性能与Co-BTH的层状结构和小尺寸的纳米片有关。A cobalt-based MOF([Co(4,4'-bpy)(tfbdc)(H_(2)O)2],Co-BTH,4,4'-bpy=4,4'-bipyridune,H_(2)tfbdc=tetrafluo-roterephthalic acid)was synthesized by a simple solvothermal reaction,and its performance as the electrode materi-al for supercapacitors was evaluated for the first time.The results show that Co-BTH electrode has good pseudo-capacitance performance,including high specific capacitance and good rate performance.In 1 mol·L^(-1) KOH solu-tion,the maximum specific capacitance was 2316 F·g^(-1) at a current density of 1 A·g^(-1).At the current density of 2 A·g^(-1),the specific capacity of the electrode still kept 847 F·g^(-1) after 1000 cycles.The good pseudo-capacitance performance is related to the layered structure of Co-BTH and the small size nanosheets.

关 键 词：钴 金属有机框架 超级电容器 电极材料 电化学性能 

分 类 号：O614.242[理学—无机化学]