非对称复合隔膜的制备及其锂金属电池性能研究

廖明杰; 庞鹏飞; 王沪; 陈江超; 张伟超; 朱归胜; 徐华蕊

doi:10.19799/j.cnki.2095-4239.2026.0288

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非对称复合隔膜的制备及其锂金属电池性能研究

储能XXXX | 更新时间：2026-05-07

- 非对称复合隔膜的制备及其锂金属电池性能研究
- Preparation of asymmetric composite separators and their performance in lithium metal batteries
- 储能科学与技术 2026年页码：1-11
- 作者机构：
  
  桂林电子科技大学材料科学与工程学院，电子信息材料与器件教育部工程研究中心，广西信息材料重点实验室，广西桂林 541004
- 作者简介：
  
  廖明杰（1998—），男，研究生，学生，新能源电池，E-mail：15181659513@163.com；
  徐华蕊，研究员，无机非金属，E-mail：Huaruixu@guet.edu.cn。
- 基金信息：
  
  广西科技计划项目(桂科AD23023013);桂林市科学研究与技术开发计划项目(20220120-1)
- DOI：10.19799/j.cnki.2095-4239.2026.0288
  中图分类号： TB 34
- 收稿：2026-04-06，
  
  修回：2026-05-06，
  
  网络首发：2026-05-06，
- 稿件说明：
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廖明杰, 庞鹏飞, 王沪, 等. 非对称复合隔膜的制备及其锂金属电池性能研究[J]. 储能科学与技术, XXXX, XX(XX): 1-11.

Liao Mingjie, Pang Pengfei, Wang Hu, et al. Preparation of asymmetric composite separators and their performance in lithium metal batteries[J]. Energy Storage Science and Technology, XXXX, XX(XX): 1-11.
廖明杰, 庞鹏飞, 王沪, 等. 非对称复合隔膜的制备及其锂金属电池性能研究[J]. 储能科学与技术, XXXX, XX(XX): 1-11. DOI： 10.19799/j.cnki.2095-4239.2026.0288.

Liao Mingjie, Pang Pengfei, Wang Hu, et al. Preparation of asymmetric composite separators and their performance in lithium metal batteries[J]. Energy Storage Science and Technology, XXXX, XX(XX): 1-11. DOI： 10.19799/j.cnki.2095-4239.2026.0288.

摘要

锂金属电池因其极高的理论能量密度而被视为下一代储能系统的有力竞争者。然而，商业聚烯烃隔膜存在热稳定性差、离子迁移数低及对锂枝晶抑制能力弱等问题，阻碍了电池的商业化应用。本研究以聚乙烯(PE)为基膜，采用非对称涂覆策略，分别引入刚性的PAN@LATP层和柔性的PEO-SiO

层，制备了Janus结构的PPL复合隔膜。LATP与SiO

纳米颗粒对阴离子具有显著的锚定效应，通过极性基团削弱锂盐中Li

与阴离子之间的库仑相互作用，从而将锂离子迁移数(

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=107293209&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=107293221&type=

2.87866688

3.21733332

)由PE隔膜的0.38提升至0.8。同时，这种“刚柔并济”的非对称结构赋予了隔膜95 MPa的机械强度与5.0 V的耐高压能力，还能有效均匀化离子通量并缓解锂枝晶生长。电化学测试表明，采用PPL隔膜组装的Li||Li对称电池在0.5 mA cm

-2

下可以稳定循环1000 h（而PE隔膜体系在约300 h发生短路失效）。此外，组装的LFP||Li全电池在1 C的高电流密度下，初始放电容量为163.25 mAh g

-1

，循环200次后容量保持率仍可达93%，较PE隔膜体系（69.2%）有明显改善。这种针对界面需求进行分区设计的非对称复合隔膜，为解决锂金属电池的安全性与循环稳定性问题提供了一种有效策略。

Abstract

Lithium metal batteries are considered strong contenders for next-generation energy storage systems due to their extremely high theoretical energy density. However

commercial polyolefin (PE) separators suffer from poor thermal stability

low ion transference number

and weak suppression of lithium dendrite growth

hindering their commercial application. This study uses polyethylene (PE) as the base membrane and employs an asymmetric coating strategy to introduce a rigid PAN@LATP layer and a flexible PEO-SiO

layer

respectively

to prepare a Janus-structured PPL composite separator. LATP and SiO

nanoparticles exhibit a significant anchoring effect on anions

weakening the Coulombic interaction between Li

and anions in the lithium salt through polar groups

thereby increasing the lithium-ion transference number (t

Li+

) from 0.38 in the PE separator to 0.8. Simultaneously

this asymmetric structure

combining rigidity and flexibility

endows the separator with a mechanical stren

gth of 95 MPa and a high voltage withstand capability of 5.0 V

while also effectively homogenizing ion flux and mitigating lithium dendrite growth. Electrochemical tests showed that the Li||Li symmetric cell assembled with a PPL separator could cycle stably for 1000 h at 0.5 mA cm

-2

(while the PE separator system experienced short-circuit failure at approximately 300 h). Furthermore

the assembled LFP||Li full cell exhibited an initial discharge capacity of 163.25 mAh g

-1

at a high current density of 1 C

and retained 93% of its capacity after 200 cycles

a significant improvement over the PE separator system (69.2%).This asymmetric composite separator

with its partitioned design tailored to interface requirements

provides an effective strategy for addressing the safety and cycle stability issues of lithium metal batteries.

关键词

Keywords

references

J. B. Goodenough, K. S. Park The Li-Ion Rechargeable Battery: A Perspective[J]. J Am Chem Soc 2013, 135(4), 1167-1176.

H. Kim, G. Jeong, Y. U. Kim, et al. Metallic anodes for next generation secondary batteries[J]. Chem Soc Rev 2013, 42(23), 9011-9034.

M. K. Aslam, Y. B. Niu, T. Hussain, et al. How to avoid dendrite formation in metal batteries: Innovative strategies for dendrite suppression[J]. Nano Energy 2021, 86, 106142.

G. X. Li Regulating Mass Transport Behavior for High-Performance Lithium Metal Batteries and Fast-Charging Lithium-Ion Batteries[J]. Adv Energy Mater 2021, 11(7), 2002891.

G. X. Li, Y. Gao, X. He, et al. Organosulfide-plasticized solid-electrolyte interphase layer enables stable lithium metal anodes for long-cycle lithium-sulfur batteries[J]. Nat Commun 2017, 8, 850.

J. X. Zheng, M. S. Kim, Z. Y. Tu, et al. Regulating electrodeposition morphology of lithium: towards commercially relevant secondary Li metal batteries[J]. Chem Soc Rev 2020, 49(9), 2701-2750.

B. L. Tong, X. F. Li Towards separator safety of lithium-ion batteries: a review[J]. Mater Chem Front 2024, 8(2), 309-340.

L. P. Zhang, X. L. Li, M. R. Yang, W. H. Chen High-safety separators for lithium-ion batteries and sodium-ion batteries: advances and perspective[J]. Energy Storage Mater 2021, 41, 522-545.

H. Lee, M. Yanilmaz, O. Toprakci, et al. A review of recent developments in membrane separators for rechargeable lithium-ion batteries[J]. Energ Environ Sci 2014, 7(12), 3857-3886.

J. Nunes-Pereira, C. M. Costa, S. Lanceros-Méndez Polymer composites and blends for battery separators: State of the art, challenges and future trends[J]. J Power Sources 2015, 281, 378-398.

Y. Feng, M. Wang, L. Gao, et al. Novel fast ionic conductor ceramic composite separator for high-performance safe Li-ion power batteries[J]. Journal of Materiomics 2022, 8(6), 1184-1190.

C. Shi, J. Dai, S. Huang, et al. A simple method to prepare a polydopamine modified core-shell structure composite separator for application in high-safety lithium-ion batteries[J]. Journal of Membrane Science 2016, 518(15), 168-177.

J. H. Dai, C. Shi, C. Li, et al. A rational design of separator with substantially enhanced thermal features for lithium-ion batteries by the polydopamine-ceramic composite modification of polyolefin membranes[J]. Energ Environ Sci 2016, 9(10), 3252-3261.

C. Likitaporn, P. Prathumrat, N. Senthilkumar, et al. Engineering the separators for high electrolyte uptakes in Li-ion batteries[J]. J Energy Storage 2024, 101, 113861.

J. Li, L. Chen, F. Wang, et al. Anionic metal-organic framework modified separator boosting efficient Li-ion transport[J]. Chemical Engineering Journal 2023, 451, 138536.

C. Yang, H. Tong, C. Luo, et al. Boehmite particle coating modified microporous polyethylene membrane: A promising separator for lithium ion batteries[J]. J Power Sources 2017, 348, 80-86.

W. K. Shin, D. W. Kim High performance ceramic-coated separators prepared with lithium ion-containing SiO 2 particles for lith ium-ion batteries[J ] . J Power Sources 2013, 226, 54-60.

Z. Yan, H. Y. Pan, J. Y. Wang, et al. Enhancing cycle stability of Li metal anode by using polymer separators coated with Ti-containing solid electrolytes[J]. Rare Metals 2021, 40(6), 1357-1365.

F. He, W. Tang, X. Zhang, et al. High Energy Density Solid State Lithium Metal Batteries Enabled by Sub‐5 µm Solid Polymer Electrolytes[J]. Adv Mater 2021, 33(45), 105329.

W. Zhou, S. Wang, Y. Li, et al. Plating a Dendrite-Free Lithium Anode with a Polymer/Ceramic/Polymer Sandwich Electrolyte[J]. J Am Chem Soc 2016, 138(30), 9385-9388.

Y. Q. Zhu, Y. J. Gao, C. H. Cui, et al. A strong-surface-polarity separator enables dendrite-free lithium metal anodes via coordinated garnet electrolyte[J]. Chemical Engineering Journal 2023, 477, 147041.

R. B. Suo, L. J. Xie, J. S. Liao, et al. Enhanced Charge Separation in a PAN/ZnO Nanocomposite for Promoted Photocatalytic Hydrogen Evolution[J]. Acs Appl Energ Mater 2024, 7(14), 5668-5678.

X. L. Fan, L. Chen, O. Borodin, et al. Non-flammable electrolyte enables Li-metal batteries with aggressive cathode chemistries[J]. Nat Nanotechnol 2018, 13(8), 715-+.

J. Bae, K. Choi, H. Y. S. Song, et al. Reinforcing Native Solid-Electrolyte Interphase Layers via Electrolyte-Swellable Soft-Scaffold for Lithium Metal Anode[J]. Adv Energy Mater 2023, 13(16), 203818.

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