A Dual-Functional Cationic Covalent Organic Frameworks Modified Separator for High Energy Lithium Metal Batteries
作者:Yao, SY (Yao, Shiyan) [1] ; Yang, Y (Yang, Yan) [1] ; Liang, ZW (Liang, Ziwei) [1] ; Chen, JH (Chen, Jiahe) [1] ; Ding, JY (Ding, Jieying) [1] ; Li, FK (Li, Fangkun) [1] ; Liu, JH (Liu, Junhao) [1] ; Xi, L (Xi, Lei) [1] ; Zhu, M (Zhu, Min) [1] ; Liu, J (Liu, Jun) [1]
(由 Clarivate 提供)
DOI10.1002/adfm.202212466
在线发表JAN 2023
已索引2023-02-01
文献类型Article; Early Access
摘要
Separator modification is an efficient strategy to handle with the challenges of lithium metal batteries but its success is primarily subject to the modification of the materials. Herein, a cationic covalent organic framework (COF) composed of positively charged organic units and weakly bonded fluoride ions (F-) is introduced to modify the commercial polypropylene separator (COF-F@PP). It is found that the organic unit has abundant nanopores to homogenize the lithium ions (Li+) flux and can interact with electrolyte solvent molecules to form a desolvation structure of Li+. Meanwhile, the F- within the nanopores is proved to assist in building a robust LiF-riched solid electrolyte interphase to avoid the side reactions between lithium anode and electrolyte. Hence, the COF-F@PP delivers feasible practicality for the outstanding cycling stability, high Coulombic efficiency, and superior rate capability of Li//LFP coin cell at 5 C, low N/P ratio (2.19) full cell, and pouch cell at 1 C.
关键词
作者关键词cationic covalent organic frameworksseparator modificationsolvation structuressolid electrolyte interphase
Keywords PlusION BATTERIESNONWOVEN SEPARATORSNANOSHEETSELECTROLYTEPERFORMANCEMEMBRANESTORAGECOFS
作者信息
通讯作者地址
Liu, Jun
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
所属机构
South China University of Technology
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
电子邮件地址msjliu@scut.edu.cn
类别/分类
研究方向ChemistryScience & Technology - Other TopicsMaterials SciencePhysics
引文主题
2 Chemistry
2.62 Electrochemistry
2.62.616 Lithium-Sulfur Batteries
Sustainable Development Goals
11 Sustainable Cities and Communities
Web of Science 类别Chemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed Matter