低碳化学与化工2026，Vol.51Issue(6)：70-78,9.DOI:10.12434/j.issn.2097-2547.20250270
功能性COF-Br-SO3Li材料的制备及锂离子传导性能研究
Study on synthesis of functional COF-Br-SO3Li material and its lithium-ion conduction performance
摘要
Abstract
Covalent organic frameworks(COFs),owing to their structural designability,excellent thermal and chemical stability and ordered pore channels,exhibit great potential as matrix materials for solid-state electrolytes.However,existing sulfonic acid-functionalized COF-based solid-state electrolyte materials possess relatively simple structures,which limit their further performance enhancement.COF-Br containing bromine anchoring sites was synthesized via a solvothermal method.Through a Williamson ether synthesis reaction,sulfonic acid functional groups were successfully introduced,leading to the preparation of the functional COF-Br-SO3Li material.By compositing COF-Br-SO3Li with polyethylene oxide(PEO),a novel composite solid-state electrolyte film was obtained.Characterization results from XRD,FT-IR and TGA confirm that the prepared COFs possess good crystallinity,porosity and thermal stability.Electrochemical measurements demonstrate that at 30℃,the lithium-ion conductivity of the COF-Br-SO3Li solid-state electrolyte reaches 2.5×10-5 S/cm,with an activation energy of 0.25 eV,an electrochemical stability window extending up to 5.2 V and a lithium-ion transference number of 0.65.During the lithium symmetric cell cycling test(500 h),the solid-state electrolyte exhibits excellent interfacial stability and outstanding capability to suppress lithium dendrite growth.关键词
共价有机框架/磺酸功能化/固态电解质/锂离子传导Key words
covalent organic frameworks/sulfonic acid functionalization/solid-state electrolytes/lithium-ion conduction分类
通用工业技术引用本文复制引用
王英姑,杨时进,陈绘宇,赵付来,李震..功能性COF-Br-SO3Li材料的制备及锂离子传导性能研究[J].低碳化学与化工,2026,51(6):70-78,9.基金项目
国家自然科学基金(52103205,52103093) （52103205,52103093）
江西省自然科学基金(20232BAB214031,20242BAB25237) （20232BAB214031,20242BAB25237）
山东省泰山学者项目(tsqn202312187) （tsqn202312187）
山东省自然科学基金(ZR2024QE220) （ZR2024QE220）
中国科协青年人才托举工程项目(2021QNRC001) （2021QNRC001）
南昌理工学院校级课题(NLZK-23-08). （NLZK-23-08）
