Imide-based covalent organic framework with excellent cyclability as an anode material for lithium-ion battery  

作　　者：Yue Qian Zhoujia Liu Haixin Song Ruize Yin Hanni Yang Siyang Li Weiwei Xiong Saisai Yuan Junhao Zhang Huan Pang 

机构地区：[1]School of Environmental&Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China [2]School of Chemistry&Chemical Engineering,Yangzhou University,Yangzhou 225009,China [3]Shandong Key Laboratory of Biochemical Analysis,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Chinese Chemical Letters》2024年第6期206-210,共5页中国化学快报（英文版）

基　　金：supported by National Natural Science Foundation of China for Youths(Nos.21701059,22205084,51902140);Natural Science Foundation of Jiangsu Province for Youths(No.BK20170571);the financial support by Shandong Key Laboratory of Biochemical Analysis(No.SKLBA2103)。

摘　　要：Covalent organic frameworks(COFs)exhibiting reversible redox behaviors have been identified as promising candidates for constructing electrode materials in lithium-ion batteries(LIBs).However,their extensive application has been limited due to finite redox sites and poor structural stability.In this study,we design and synthesize a novel polyimide covalent organic framework(PI-COF)using the traditional solvothermal method and successfully apply it as an anode material for LIBs.The large conjugated structure of PI-COF accelerates charge transfer,while its large surface area provides more active sites,making PI-COF an attractive anode material for LIBs.Furthermore,the PI-COF anode material demonstrates high reversible specific capacity and excellent long-term cycling stability due to its COF characteristics.Specifically,the PI-COF electrodes deliver a specific capacity of 800 m Ah/g at a current density of 200 m A/g after 200 cycles,while a specific capacity of 450 m Ah/g at a current density of 1000 m A/g is sustained after 800 cycles.The outstanding lithium storage capacity,particularly the satisfactory long-term cycling stability,establishes PI-COF as a promising material for LIBs.

关 键 词：Ethylenediaminetetraacetic dianhydride Covalent organic frameworks Polyimide Lithium-ion battery Anode material 

分 类 号：TB34[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]