三维钴基MOF[KCo7(OH)3(ip)6(H2O)4]·12H2O作为超级电容器的高容量电极材料  

Three⁃Dimensional Cobalt⁃Based MOF[KCo7(OH)3(ip)6(H2O)4]·12H2O as High⁃Capacity Electrode Materials for Supercapacitors

作　　者：戎红仁[1] 王先梅 马艳伟 高葛祥 苏豪祺 赖梨芳[1] 刘琦[1] RONG Hong‑Ren;WANG Xian‑Mei;MA Yan‑Wei;GAO Ge‑Xiang;SU Hao‑Qi;LAI Li‑Fang;LIU Qi(School of Petrochemical Engineering,Jiangsu Province Key Laboratory of Fine Petrochemical Engineering,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2期206-212,共7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：为了开发较高能量密度的超级电容器,我们通过简单的溶剂热反应合成了一种三维的钴基金属有机框架(MOF)化合物([KCo7(OH)3(ip)6(H2O)4]·12H2O,Co‑ip;ip=间苯二甲酸根),并考察了其作为超级电容器电极材料的性能。Co‑ip电极显示出高比电容、良好的循环稳定性和优良的倍率性能。在1 mol·L^-1 KOH溶液中,电流密度为1 A·g^-1时,其最大比电容为1660 F·g^-1。在电流密度为2 A·g^-1条件下,循环3000次后,其比电容的保持率为82.7%。优异的超级电容性能可归因于Co‑ip具有纳米尺寸颗粒和三维的多孔结构。In order to develop supercapacitors with higher energy density,a three‑dimensional cobalt‑based metalorganic framework(MOF)compound([KCo7(OH)3(ip)6(H2O)4]·12H2O,Co‑ip;ip=isophthalate)was synthesized by simple solvothermal reaction.Its electrochemical performances as a supercapacitor electrode material were investigated.The Co‑ip electrode exhibited high specific capacitance,good cycle stability,and superior rate performance.In 1 mol·L^-1 KOH solution,the maximum specific capacitance was 1660 F·g^-1 at a current density of 1 A·g^-1.At a current density of 2 A·g^-1,the retention of specific capacitance was 82.7%after 3000 cycles.The superior supercapacitive performance is attributed to the three‑dimensional porous structure of Co‑ip and nano‑sized particles.

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]