原位聚合法构筑半互穿聚合物电解质

刘轩; 庄红磊; 贺雅悦; 刘文影; 刘婧珺; 田茂润; 冉雨恒; 杨忆江

doi:10.19799/j.cnki.2095-4239.2026.0483

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原位聚合法构筑半互穿聚合物电解质

储能材料与器件 | 更新时间：2026-09-18

- 原位聚合法构筑半互穿聚合物电解质
- In-situ polymerization for constructing semi-interpenetrating polymer electrolytes
- 储能科学与技术 2026年15卷第9期页码：3573-3581
- 作者机构：
  
  太原工业学院材料工程系，山西太原 030008
- 作者简介：
  
  刘轩（2004—），男，本科，E-mail：19105289915@163.com；
  贺雅悦，博士，讲师，研究方向为高分子材料、锂离子电池，E-mail：heyayue@tit.edu.cn。
- 基金信息：
  
  太原工业学院引进人才科研资助项目(2024KJ035;2025LJ004)
- DOI：10.19799/j.cnki.2095-4239.2026.0483
  中图分类号： TB 332
- 收稿：2026-06-03，
  
  修回：2026-06-22，
  
  纸质出版：2026-09-28
- 稿件说明：
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刘轩, 庄红磊, 贺雅悦, 等. 原位聚合法构筑半互穿聚合物电解质[J]. 储能科学与技术, 2026, 15(9): 3573-3581.

LIU Xuan, ZHUANG Honglei, HE Yayue, et al. In-situ polymerization for constructing semi-interpenetrating polymer electrolytes[J]. Energy Storage Science and Technology, 2026, 15(9): 3573-3581.
刘轩, 庄红磊, 贺雅悦, 等. 原位聚合法构筑半互穿聚合物电解质[J]. 储能科学与技术, 2026, 15(9): 3573-3581. DOI： 10.19799/j.cnki.2095-4239.2026.0483.

LIU Xuan, ZHUANG Honglei, HE Yayue, et al. In-situ polymerization for constructing semi-interpenetrating polymer electrolytes[J]. Energy Storage Science and Technology, 2026, 15(9): 3573-3581. DOI： 10.19799/j.cnki.2095-4239.2026.0483.

摘要

针对传统凝胶聚合物电解质机械强度与离子电导率难以协同优化，且与电极界面相容性较差的问题，本工作设计并制备了一种基于半互穿聚合物网络结构的准固态电解质体系（semi-IPE）。该体系以聚乙二醇二丙烯酸酯（PEGDMA）与聚乙二醇甲醚甲基丙烯酸酯（PEGMA）为交联单体，构建三维交联网络骨架，以提供稳定的力学支撑与结构完整性；同时引入聚1

3-二氧戊环（PDOL）作为线性聚合物链，通过物理穿插方式嵌入网络之中。通过系统调控线性聚合物链与三维交联网络的配比（体积比分别为1∶1、2∶1、1∶2），研究不同组分比例对电解质物化性能

、离子传导能力及电池性能的调控规律。结果表明，线性聚合物链与三维交联网络的配比为2∶1的半互穿聚合物电解质[semi-IPE(2∶1)

]

室温离子电导率可达3.65 mS/cm，电化学窗口拓宽至4.7 V以上，机械强度与柔韧性实现良好平衡。组装的LiFePO

/semi-IPE/Li锂金属电池在2 C倍率下经300次循环后容量保持率高于75%。本研究为实现力学性能与离子电导率的协同优化提供了可行策略，也为高性能准固态聚合物电解质的结构设计奠定了实验基础。

Abstract

To overcome the limitations of traditional gel polymer electrolytes

including the trade-off between mechanical strength and ionic conductivity

as well as inadequate interfacial compatibility with electrodes

we designed and synthesized a quasi-solid-state electrolyte system based on a semi-interpenetrating polymer network structure. A three-dimensional crosslinked network was constructed using poly(ethylene glycol) diacrylate and poly(ethylene glycol) methyl ether methacrylate as crosslinking monomers

providing stable mechanical support and structural integrity. Meanwhile

poly(1

3-dioxolane) was introduced as a linear polymer chain that physically interpenetrates the crosslinked network. By systematically adjusting the ratio between the three-dimensional crosslinked network and the linear polymer chains (volume ratios of 1∶1

2∶1

and 1∶2)

we investigated the effects of compositional variations on the physicochemical properties

ionic conductivity

and electrochemical performance of the electrolyte. The results show that the semi-interpenetrating polymer electrolyte [semi-IPE(2∶1)

]

with an optimized crosslinked network-to-linear polymer ratio of 2∶1 achieves an ionic conductivity of up to 3.65 mS/cm at room temperature

an electrochemical stability window exceeding 4.7 V

and a well-balanced combination of mechanical strength and flexibility. The assembled LiFePO

/semi-IPE/Li lithium metal battery retains more than 75% of its capacity after 300 cycles at a current density of 2 C. This study provides a feasible strategy for the synergistic optimization of mechanical properties and ionic conductivity and establishes an experimental foundation for the structural design of high-performance qua

si-solid-state polymer electrolytes.

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Keywords

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