Construction of Multifunctional Synergistic Gel Polymer Electrolyte and Its Performance in Wide-temperature-range Lithium Metal Batteries

Lin Wang; Yun-peng Qu; Chang Su; Wan-yuan Jiang; Xi-gao Jian; Fang-yuan Hu

doi:10.11777/j.issn1000-3304.2025.25226

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Construction of Multifunctional Synergistic Gel Polymer Electrolyte and Its Performance in Wide-temperature-range Lithium Metal Batteries

Research Article | 更新时间：2026-01-16

- Construction of Multifunctional Synergistic Gel Polymer Electrolyte and Its Performance in Wide-temperature-range Lithium Metal Batteries
- Acta Polymerica Sinica Vol. 57, Issue 1, Pages: 245-258(2026)
- 作者机构：
  
  1.大连理工大学，材料科学与工程学院，大连 116024
  2.大连理工大学，精细化工国家重点实验室，大连 116024
- 作者简介：
  
  Xi-gao Jian, E-mail: jian4616@dlut.edu.cn
  Fang-yuan Hu, E-mail: hufangyuan@dlut.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25226
  CLC：
- CSTR：32057.14.GFZXB.2025.7501
- Received：05 September 2025，
  
  Accepted：23 October 2025，
  
  Published Online：07 January 2026，
  
  Published：20 January 2026
- 稿件说明：
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王琳, 曲云鹏, 苏畅, 江万源, 蹇锡高, 胡方圆. 多功能协同凝胶聚合物电解质的构建及其宽温域锂金属电池性能. 高分子学报, 2026, 57(1), 245-258.

Wang, L.; Qu, Y. P.; Su, C.; Jiang, W. Y.; Jian, X. G.; Hu, F. Y. Construction of multifunctional synergistic gel polymer electrolyte and its performance in wide-temperature-range lithium metal batteries. Acta Polymerica Sinica (in Chinese), 2026, 57(1), 245-258.
王琳, 曲云鹏, 苏畅, 江万源, 蹇锡高, 胡方圆. 多功能协同凝胶聚合物电解质的构建及其宽温域锂金属电池性能. 高分子学报, 2026, 57(1), 245-258. DOI： 10.11777/j.issn1000-3304.2025.25226. CSTR： 32057.14.GFZXB.2025.7501.

Wang, L.; Qu, Y. P.; Su, C.; Jiang, W. Y.; Jian, X. G.; Hu, F. Y. Construction of multifunctional synergistic gel polymer electrolyte and its performance in wide-temperature-range lithium metal batteries. Acta Polymerica Sinica (in Chinese), 2026, 57(1), 245-258. DOI： 10.11777/j.issn1000-3304.2025.25226. CSTR： 32057.14.GFZXB.2025.7501.

摘要

随着当前技术的不断发展，锂金属电池在极端工况下的运行需求日益增长. 然而，现有电解质体系普遍存在热稳定性较差、界面副反应显著以及低温条件下离子电导率不足等问题，在严苛环境应用中，实现电池的安全运行与长周期稳定性仍面临重大挑战，因此开发具有耐高温特性的凝胶聚合物电解质(GPE)显得尤为迫切. 本工作提出了一种基于不可燃电解质的双功能策略，通过本征阻燃特性与界面调控机制的协同作用，实现了电解质优异的热稳定性和高离子电导率. 该电解质凭借自清洁能力及所形成的坚固且富含无机物的界面层，有效保障了锂金属电池在高温下的安全与稳定运行. 实验结果表明，LiFePO

/GPE/Li电池在60 ℃下循环100次后容量几乎保持不变，在-20 ℃的低温条件下，能够在0.1 C电流密度下稳定循环100次，所组装的软包电池在弯曲、折叠与切割等极端条件下仍可持续驱动LED屏幕. 综上所述，本工作开发的GPE电解质体系可为宽温度范围内的高安全性与高稳

定性锂金属电池提供有效解决方案.

Abstract

With the continuous advancement of current technology

there is a growing demand for lithium metal batteries (LMBs) to operate under extreme conditions. However

existing electrolyte systems generally suffer from poor thermal stability

significant interfacial side reactions

and insufficient ionic conductivity at low temperatures. Achieving safe operation and long-term cycling stability in harsh environments remains a major challenge

necessitating the development of high-temperature-resistant solid electrolytes. This study proposed a dual-functional strategy based on a non-flammable electrolyte that achieved exceptional thermal stability and high ionic conductivity through the synergistic effect of intrinsic flame-retardant properties and interfacial modulation mechanisms. Leveraging its self-purification capability and the formation of a robust

inorganic-rich interphase layer

the electrolyte effectively ensured the safety and stability of lithium metal batteries under high-temperature conditions. The experimental results demonstrated that the LFP/GPE/Li cell exhibited a nearly unchanged capacity after 100 cycles at 60 ℃. Furthermore

at a low temperature of -20 ℃

the LFP/GPE/Li cell could stably cycle 100 times at a current density of 0.1 C

and the assembled pouch cell remained capable of continuously driving an LED screen under extreme conditions

such as bending

folding

and cutting. In summary

the GPE electrolyte system developed in this study offers an effective solution for lithium metal batteries with high safety and stability over a wide temperature range.

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references

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