Ionogel with Synergistic Dual Dynamic Bonds for High Self-healing and Ionic Conductivity

Feng Liao; Yi-jun Li; Jin-tian Wu; Jian-jun Ma; Ning Chen

doi:10.11777/j.issn1000-3304.2025.25292

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Ionogel with Synergistic Dual Dynamic Bonds for High Self-healing and Ionic Conductivity

Research Article | 更新时间：2026-04-01

- Ionogel with Synergistic Dual Dynamic Bonds for High Self-healing and Ionic Conductivity
- Acta Polymerica Sinica Vol. 57, Issue 4, Pages: 914-926(2026)
- 作者机构：
  
  1.四川轻化工大学材料科学与工程学院自贡 643000
  2.四川大学高分子研究所先进高分子材料全国重点实验室成都 610065
- 作者简介：
  
  Jin-tian Wu, E-mail: wjt@suse.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25292
  CLC：
- CSTR：32057.14.GFZXB.2025.7545
- Received：17 November 2025，
  
  Accepted：30 December 2025，
  
  Online First：09 February 2026，
  
  Published：20 April 2026
- 稿件说明：
移动端阅览
廖锋, 李怡俊, 吴津田, 马建军, 陈宁. 双重动态键协同构筑高自修复及高离子通导离子凝胶. 高分子学报, 2026, 57(4), 914-926.

Liao, F.; Li, Y. J.; Wu, J. T.; Ma, J. J.; Chen, N. Ionogel with synergistic dual dynamic bonds for high self-healing and ionic conductivity. Acta Polymerica Sinica (in Chinese), 2026, 57(4), 914-926.
廖锋, 李怡俊, 吴津田, 马建军, 陈宁. 双重动态键协同构筑高自修复及高离子通导离子凝胶. 高分子学报, 2026, 57(4), 914-926. DOI： 10.11777/j.issn1000-3304.2025.25292. CSTR： 32057.14.GFZXB.2025.7545.

Liao, F.; Li, Y. J.; Wu, J. T.; Ma, J. J.; Chen, N. Ionogel with synergistic dual dynamic bonds for high self-healing and ionic conductivity. Acta Polymerica Sinica (in Chinese), 2026, 57(4), 914-926. DOI： 10.11777/j.issn1000-3304.2025.25292. CSTR： 32057.14.GFZXB.2025.7545.

摘要

离子凝胶因其高安全性和宽电化学窗口，在储能领域展现出广阔的应用前景. 然而，现有离子凝胶往往难以同时兼顾高强度与动态特性，导致力学性能、自修复能力和离子电导率之间难以平衡. 针对这一挑战，本工作设计了一种新型离子凝胶电解质，兼具良好柔性、高机械强度、宽电化学窗口以及快速自修复功能. 该电解质采用双重动态交联机制构建自修复体系：一方面引入咪唑-锌(Im-Zn)金属配位作用，形成动态高强度交联网络；另一方面，利用离子液体(IL)与聚合物链上―CF

基团之间产生的离子-偶极(Ion-D)相互作用，调控链段运动能力，从而优化离子传输性能. 基于该结构，离子凝胶实现了高达94%的自修复效率和80 kPa的拉伸强度. 此外，该材料还具备0.36 mS/cm的高离子电导率、0.46的锂离子迁移数以及4.32 V的宽电化学窗口，可全面改善固态

锂电池的性能. 基于该离子凝胶组装的Li/LiFePO

全电池在0.5 C倍率下循环500圈后，容量保持率仍高达80%. 本工作揭示了超分子结构设计对离子凝胶中离子传输行为和链段运动特性的调控机制，为高性能储能材料的发展提供了理论支撑.

Abstract

Ionogels

known for their high safety and wide electrochemical windows

show great potential in energy storage. However

existing ionogels often struggle to balance high strength with dynamic properties

making it difficult to achieve an optimal combination of mechanical performance

self-healing capability

and ionic conductivity. To address this challenge

this study presents a novel ionogel electrolyte that integrates good flexibility

high mechanical strength

a wide electrochemical window

and rapid self-healing functionality. The self-healing system of the electrolyte is constructed through a dual dynamic crosslinking mechanism: on one hand

imidazole-zinc (Im-Z) metal coordination is introduced to form a dynamic high-strength crosslinked network; on the other hand

ion-dipole (Ion-D) interactions between the ionic liquid (IL) and ―CF

groups on the polymer chains are utilized to regulate chain segment mobility

thereby optimizing ion transport performance. Owing to this structure

the ionogel achieved a high self-healing efficiency of 94% and a tensile strength of 80 kPa. Moreover

the material e

xhibits a high ionic conductivity of 0.36 mS/cm

lithium-ion transference number of 0.46

and wide electrochemical window of 4.32 V

all of which contribute to the comprehensive improvements in the performance of solid-state lithium batteries. A Li/LiFePO

full cell assembled with this ionogel maintained a capacity retention rate as high as 80 % after 500 cycles at 0.5 C. This study elucidates the regulatory mechanism of supramolecular structural design on ion transport behavior and chain segment dynamics in ionogels

providing a theoretical basis for developing high-performance energy storage materials.

关键词

Keywords

references

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