固态电解质湿法PE挤出隔膜的应用研究

郭占星; 李坤; 马文献; 杨欢; 侯丹丹; 赵壮壮

doi:10.19799/j.cnki.2095-4239.2026.0398

您当前的位置：

首页 >

文章列表页 >

固态电解质湿法PE挤出隔膜的应用研究

储能材料与器件 | 更新时间：2026-09-18

- 固态电解质湿法PE挤出隔膜的应用研究
- Application of solid-state electrolytes in wet-process PE extruded separators
- 储能科学与技术 2026年15卷第9期页码：3525-3534
- 作者机构：
  
  河北金力新能源科技有限公司，河北邯郸 057150
- 作者简介：
  
  郭占星（1997—），男，工程师，主要研究方向为锂离子电池电极/电解质界面，E-mail： gzx@gellec.com；
  李坤，工程师，主要研究方向为锂离子电池电极/电解质界面，E-mail： 1272900057@qq.com。
- 基金信息：
- DOI：10.19799/j.cnki.2095-4239.2026.0398
  中图分类号： TM 91
- 收稿：2026-05-11，
  
  修回：2026-06-22，
  
  纸质出版：2026-09-28
- 稿件说明：
移动端阅览
郭占星, 李坤, 马文献, 等. 固态电解质湿法PE挤出隔膜的应用研究[J]. 储能科学与技术, 2026, 15(9): 3525-3534.

GUO Zhanxing, LI Kun, MA Wenxian, et al. Application of solid-state electrolytes in wet-process PE extruded separators[J]. Energy Storage Science and Technology, 2026, 15(9): 3525-3534.
郭占星, 李坤, 马文献, 等. 固态电解质湿法PE挤出隔膜的应用研究[J]. 储能科学与技术, 2026, 15(9): 3525-3534. DOI： 10.19799/j.cnki.2095-4239.2026.0398.

GUO Zhanxing, LI Kun, MA Wenxian, et al. Application of solid-state electrolytes in wet-process PE extruded separators[J]. Energy Storage Science and Technology, 2026, 15(9): 3525-3534. DOI： 10.19799/j.cnki.2095-4239.2026.0398.

摘要

为满足商用电池对隔膜的性能需求，针对传统湿法聚乙烯（PE）制膜体系下PE隔膜离子电导率低、孔隙率低、电解液亲和性差、难以润湿的缺点，使用固态电解质磷酸钛铝锂（LATP）作为挤出添加剂，改善已经商业化的传统湿法PE隔膜的性能，构建了固态电解质-PE复合膜。给出了明确的工艺实施方案并提供了具体的工艺参数。此外，研究了不同添加量的固态电解质（20%、50%）对隔膜性能产生的影响，根据性能得到了最优添加量为20%，结果表明固态电解质添加量为20%时，隔膜的孔隙率由纯PE膜的45.74%提升至55.84%；且微观下隔膜的孔径更大，隔膜截面有明显的固态电解质颗粒形成占位，此外隔膜的电解液润湿性得到了提升，接触角从40.4降低到34.1；吸液率由80%提升到105%，表现出优异的物理性能。另外分别对纯PE膜、复合膜进行了离子电导率测试和电化学测试，结果表明，复合膜的离子电导率由纯PE膜的0.897 mS/cm提升到2.137 mS/cm，且复合膜的扣式电池电阻率更低，循环时间更长，倍率充放电性能更优异。

Abstract

To meet the performance requirements of next-generation commercial batteries and overcome the limitations of traditional wet-processed polyethylene (PE) separators

such as low ionic conductivity

low porosity

poor electrolyte affinity

and inadequate wettability

this study introduces the solid-state electrolyte lithium aluminum titanium phosphate (LATP) as an extrusion additive to enhance the performance of commercially available wet-processed PE separators. A solid-state electrolyte-PE composite membrane was successfully fabricated

and a practical fabrication process with specific processing parameters is presented. The effects of different LATP loadings (20% and 50%) on the properties of the composite separator were systematically investigated. The optimal performance was achieved at a LATP loading of 20%. The results indicate that

at a 20% LATP loading

the porosity of the separator increased from 45.74% for the pure PE membrane to 55.84% for the composite membrane. Microscopic characterization revealed large pore sizes and the presence of distinct LATP particles within the cross-section of the separator. Furthermore

the electrolyte wettability of the separator was significantly improved

with the contact angle decreasing from 40.4° to 34.1° and the electrolyte uptake increasing from 80% to 105%

demonstrating enhanced physicochemical properties. Additionally

ionic conductivity measurements and electrochemical evaluations were conducted on both the pure PE membrane and the composite membrane. The results showed that the ionic conductivity of the composite membrane increased from 0.897 mS/cm for the pure PE membrane to 2.137 mS/cm. Moreover

coin cells assembled with the composite membrane exhibited lower resistivity

longer cycle life

and superior rate capability.

关键词

Keywords

references

LIU H L, YANG F, XIANG M, et al. Development of multilayer polypropylene separators for lithium-ion batteries via an industrial process[J ] . Industrial & Engineering Chemistry Research, 2021, 60(30): 11611-11620. DOI: 10.1021/acs.iecr.1c01577.

LIU H, GU J, FAN H G, et al. Thermal conversion performance, kinetic mechanism, and products of electric vehicle lithium battery diaphragms[J]. Energy Conversion and Management, 2023, 295: 117612. DOI: 10.1016/j.enconman.2023.117612.

WANG C, WU X Y, YUAN W, et al. New understanding toward lithium morphologic evolution in lithium metal batteries[J]. Advanced Functional Materials, 2024, 34(48): 2408758. DOI: 10. 1002/adfm.202408758.

HE X F, LIU X, HAN Q, et al. A liquid/liquid electrolyte interface that inhibits corrosion and dendrite growth of lithium in lithium-metal batteries[J]. Angewandte Chemie International Edition, 2020, 59(16): 6397-6405. DOI: 10.1002/anie.201914532.

HUANG Y F, YANG H T, GAO Y, et al. Mechanism and solutions of lithium dendrite growth in lithium metal batteries[J]. Materials Chemistry Frontiers, 2024, 8(5): 1282-1299. DOI: 10.1039/d3qm01151h.

唐玲玲, 权家友, 茆汉军, 等. 退火对PE-UHMW湿法锂离子电池隔膜的影响[J]. 工程塑料应用, 2024, 52(11): 71-78.

TANG L L, QUAN J Y, MAO H J, et al. Effect of annealing on PE-UHMW wet process lithium ion battery separators[J]. Engineering Plastics Application, 2024, 52(11): 71-78.

YANG L, GAO X X, LI J J, et al. Anchoring carbon spheres on titanium dioxide modified commercial polyethylene (PE) separator to suppress lithium dendrites for lithium metal batteries[J]. Small, 2024, 20(27): 2310915. DOI: 10.1002/smll.202310915.

SHENG L, XU R, ZHANG H, et al. The morphology of polyethylene (PE) separator for lithium-ion battery tuned by the extracting process[J]. Journal of Electroanalytical Chemistry, 2020, 873: 114391. DOI: 10.1016/j.jelechem.2020.114391.

PARK S, CHOI S, LIM J, et al. Highly thermally conductive ceramic-coated separators with aluminum nitride for mitigating thermal runaway in lithium-ion batteries[J]. Chemical Engineering Journal, 2025, 513: 162732. DOI: 10.1016/j.cej.2025.162732.

FAN Z X, CHEN X Y, SHI J J, et al. Functionalized separators boosting electrochemical performances for lithium batteries[J]. Nano-Micro Letters, 2025, 17(1): 128. DOI: 10.1007/s40820-024-01596-x.

辛煜, 许远远, 吴于松, 等. 聚偏氟乙烯及其共聚物涂覆聚烯烃隔膜的研究进展[J]. 浙江化工, 2024, 55(7): 7-14.

XIN Y, XU Y Y, WU Y S, et al. Research progress on poly(vinylidene fluoride) and its copolymers coated on polyolefin separators[J]. Zhejiang Chemical Industry, 2024, 55(7): 7-14.

朱亭仪, 胡彦杰. 火焰燃烧制备纳米氧化铝及其在锂电池隔膜涂覆中的应用研究[J]. 现代化工, 2025, 45(11): 87-91, 98.

ZHU T Y, HU Y J. Preparation of nano-alumina by flame spray pyrolysis and application in separator coating for lithium-ion batteries[J]. Modern Chemical Industry, 2025, 45(11): 87-91, 98.

SU M M, CHEN Y F, WANG S Q, et al. Bifunctional separator with high thermal stability and lithium dendrite inhibition toward high safety lithium-ion batteries[J]. Chinese Chemical Letters, 2023, 34(5): 107553. DOI: 10.1016/j.cclet.2022.05.067.

胡逸伦, 王新威, 张玉梅, 等. 均匀设计优化湿法制备PE-UHMW锂离子电池隔膜[J]. 工程塑料应用, 2018, 46(3): 56-61.

HU Y L, WANG X W, ZHANG Y M, et al. Optimized wet fabrication process of PE-UHMW lithium ion battery separators via uniform design[J ] . Engineering Plastics Application, 2018, 46(3): 56-61.

ZHANG Y L, LU J H, JIN Z Q, et al. Covalently anchoring an ultrathin conformal SiO x coating on polyolefin separator for enhanced lithium metal battery performance[J ] . Advanced Functional Materials, 2025, 35(11): 2417160. DOI: 10.1002/adfm. 202417160.

宋季岭, 郑斌, 郭建兵, 等. PVDF/PVDF-HFP/SiO 2 复合隔膜的制备及性能[J ] . 工程塑料应用, 2025, 53(10): 24-31.

SONG J L, ZHENG B, GUO J B, et al. Preparation and performances of PVDF/PVDF-HFP/SiO 2 composite separators[J ] . Engineering Plastics Application, 2025, 53(10): 24-31.

WANG Z Y, ZHAO C Z, SUN S, et al. Achieving high-energy and high-safety lithium metal batteries with high-voltage-stable solid electrolytes[J]. Matter, 2023, 6(4): 1096-1124. DOI: 10.1016/j.matt.2023.02.012.

禹江彬, 袁紫微, 陈潇川, 等. 硫化物全固态锂金属电池负极界面优化策略研究进展[J]. 安徽工业大学学报(自然科学版), 2026, 43(1): 1-13.

YU J B, YUAN Z W, CHEN X C, et al. Research progress on anode interfacial optimization strategies for sulfide-based all-solid-state lithium metal batteries[J]. Journal of Anhui University of Technology (Natural Science), 2026, 43(1): 1-13.

BALAISH M, KIM K J, CHU H, et al. Emerging processing guidelines for solid electrolytes in the era of oxide-based solid-state batteries[J]. Chemical Society Reviews, 2025, 54(19): 8925-9007. DOI: 10.1039/d5cs00358j.

GAO X R, XING Z, WANG M Y, et al. Comprehensive insights into solid-state electrolytes and electrode-electrolyte interfaces in all-solid-state sodium-ion batteries[J]. Energy Storage Materials, 2023, 60: 102821. DOI: 10.1016/j.ensm.2023.102821.

ZOU Z H, YIN M J, YIN P, et al. Facile preparation of surface-modified polypropylene nanofiber separators with enhanced ionic transport and welding performance for lithium-ion batteries[J]. Nano Energy, 2024, 127: 109774. DOI: 10.1016/j.nanoen. 2024.109774.

TANG C, FAN Z J, DING B, et al. Functional separator with poly(acrylic acid)-enabled Li 2 CO 3 -free garnet coating for long-cycling lithium metal batteries[J ] . Small, 2025, 21(1): 2407558. DOI: 10.1002/smll.202407558.

HE J Y, HU G L, CHEN J, et al. Ultrahigh stability of lithium batteries improved by methoxy-modified graphdiyne composite separators[J]. Chemical Engineering Journal, 2025, 511: 161941. DOI: 10.1016/j.cej.2025.161941.

WANG J P, SUN M Z, LANG F, et al. Unlocking ultra-long cycle stability of Li metal electrode by separators modified by porous red phosphorus nanosheets[J]. Advanced Functional Materials, 2026, 36(20): 2501402. DOI: 10.1002/adfm.202501402.

LIU S X, LIU Q, CHENG P, et al. Polydopamine chelate modified separators for lithium metal batteries with high-rate capability and ultra-long cycling life[J]. Advanced Science, 2025, 12(25): 2501155. DOI: 10.1002/advs.202501155.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

有机物辅助的硫化物电解质基固态电池

聚环氧乙烷基电解质结构设计与离子传输机制研究进展

全固态电池卤化物固态电解质研究进展

机器学习辅助相场模拟预测锂离子输运参数对电池枝晶最大生长高度和空间利用率的影响

大功率高速飞轮储能电机表贴式转子涡流损耗研究及温度场分析