Functionalizing MOF with Redox-Active Tetrazine Moiety for Improving the Performance as Cathode of Li-O_(2)Batteries  

作　　者：Na Li Ze Chang Ming Zhong Zi-Xuan Fu Jun Luo Yi-Fang Zhao Guo-Bao Li Xian-He Bu 

机构地区：[1]School of Materials Science and Engineering,Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry,Nankai University,Tianjin 300350 [2]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071 [3]Beijing National Laboratory for Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871

出　　处：《CCS Chemistry》2021年第3期1297-1305,共9页中国化学会会刊（英文）

基　　金：supported by the NSFC(nos.21421001,21531005,21905142,and 21671112);the Program of Introducing Talents of Discipline to Universities(no.B18030);the Natural Science Fund of Tianjin(nos.19JCZDJC37200 and 19JCQNJC02600);China.The authors thank Professor Brian Space(University of South Florida,Tampa,FL)for discussion and help.

摘　　要：A redox-active tetrazine moiety is immobilized within a metal-organic framework(MOF)aiming at targeted construction of a cathode with improved performance for lithium–oxygen batteries.A 1,2,4,5-tetrazine(Tz)functionalized ligand is used to construct a nanoporous MOF,Tz-Mg-MOF-74,in which the redox activity of the Tz moiety is retained.Combining the redox activity of Tz with the porous nature of a MOF produced a Tz-Mg-MOF-74-based cathode with significantly improved electrochemical performance.Specifically,the material has improved sustainable capacity with a lower overpotential compared with otherwise similar batteries without Tz and other reported MOF-based catalysts.The present approach productively integrates electrochemical activity derived from redox-active moieties and MOFs,and this combination opens a new avenue for the design of effective materials for energy storage and conversion.

关 键 词：redox-active TETRAZINE functionalized MOF cathode material lithium–oxygen battery 

分 类 号：TM912[电气工程—电力电子与电力传动]