Study on synthesis of functional COF-Br-SO<sub>3</sub>Li material and its lithium-ion conduction performance

WANG Yinggu; YANG Shijin; CHEN Huiyu; ZHAO Fulai; LI Zhen

doi:10.12434/j.issn.2097-2547.20250270

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Study on synthesis of functional COF-Br-SO₃Li material and its lithium-ion conduction performance

更新时间：2026-06-25

- Study on synthesis of functional COF-Br-SO₃Li material and its lithium-ion conduction performance
- Vol. 51, Issue 6, Pages: 70-78(2026)
- 作者机构：
  
  1.南昌理工学院智能建筑工程学院，江西南昌 330044
  2.山东理工大学材料科学与工程学院，山东淄博 255000
  3.华东交通大学材料科学与工程学院，江西南昌 330013
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250270
  CLC： TB34
- Received：15 June 2025，
  
  Revised：2025-08-04，
  
  Published：25 June 2026
- 稿件说明：
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王英姑,杨时进,陈绘宇等.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. DOI: 10.12434/j.issn.2097-2547.20250270.

WANG Yinggu,YANG Shijin,CHEN Huiyu,et al.Study on synthesis of functional COF-Br-SO₃Li material and its lithium-ion conduction performance[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(6):70-78. DOI: 10.12434/j.issn.2097-2547.20250270.
王英姑,杨时进,陈绘宇等.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. DOI: 10.12434/j.issn.2097-2547.20250270. DOI：

WANG Yinggu,YANG Shijin,CHEN Huiyu,et al.Study on synthesis of functional COF-Br-SO₃Li material and its lithium-ion conduction performance[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(6):70-78. DOI: 10.12434/j.issn.2097-2547.20250270. DOI：

摘要

共价有机框架材料（COFs）凭借其结构可设计性、良好热/化学稳定性和有序孔道，在固态电解质基体材料方面展现出较大应用潜力。然而，现有磺酸功能化COFs基固态电解质材料结构单一，限制了其性能提升。采用溶剂热法合成含溴基锚定点的COF-Br，通过威廉姆逊醚合成反应引入磺酸功能性基团，成功制备了功能性COF-Br-SO

Li材料，并将其与聚环氧乙烷（PEO）复合，制备了新型复合固态电解质薄膜。通过XRD、FT-IR和TGA等表征手段，验证了制备的COFs具有良好的结晶性、多孔性和热稳定性。电化学性能表征结果表明，30 ℃下，COF-Br-SO

Li固态电解质的锂离子传导率为2.5 × 10

-5

S/cm，活化能为0.25 eV，电化学稳定窗口拓宽至5.2 V，锂离子迁移数提升至0.65。在锂对称电池循环充放电测试（500 h）过程中，该固态电解质表现出良好的界面稳定性，以及优异的抑制锂枝晶生长性能。

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-SO

Li material. By compositing COF-Br-SO

Li 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-SO

Li 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 stabilit

y and outstanding capability to suppress lithium dendrite growth.

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references

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Study on synthesis of functional COF-Br-SO3Li material and its lithium-ion conduction performance

DOI：10.12434/j.issn.2097-2547.20250270

摘要

Abstract

关键词

Keywords

references

Study on synthesis of functional COF-Br-SO₃Li material and its lithium-ion conduction performance