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

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

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Covalent organic frameworks(COFs)exhibiting reversible redox behaviors have been identified as promis-ing candidates for constructing electrode materials in lithium-ion batteries(LIBs).However,their exten-sive 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 struc-ture 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.Specif-ically,the PI-COF electrodes deliver a specific capacity of 800 mAh/g at a current density of 200mA/g after 200 cycles,while a specific capacity of 450 mAh/g at a current density of 1000 mA/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.

Ethylenediaminetetraacetic dianhydrideCovalent organic frameworksPolyimideLithium-ion batteryAnode material

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

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School of Environmental & Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China

Shandong Key Laboratory of Biochemical Analysis,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

School of Chemistry & Chemical Engineering,Yangzhou University,Yangzhou 225009,China

National Natural Science Foundation of China for YouthsNational Natural Science Foundation of China for YouthsNational Natural Science Foundation of China for YouthsNatural Science Foundation of Jiangsu Province for YouthsShandong Key Laboratory of Biochemical Analysis

217010592220508451902140BK20170571SKLBA2103

2024

10.1016/j.cclet.2023.108785

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(6)
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