材料科学

锂离子电池用多级ZnO-PMIA纳米纤维隔膜的制备及性能

  • 武思敏 ,
  • 胡祖明 ,
  • 于俊荣 ,
  • 王彦 ,
  • 李娜
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  • 东华大学 材料科学与工程学院 先进纤维材料全国重点实验室, 上海 201620

收稿日期: 2024-12-23

  网络出版日期: 2025-09-16

基金资助

国家重点研发计划资助项目(2021YFB3700101)

Preparation and performance of multi-level ZnO-PMIA nanofiber separator for lithium-ion batteries

  • WU Simin ,
  • HU Zuming ,
  • YU Junrong ,
  • WANG Yan ,
  • LI Na
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  • State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

Received date: 2024-12-23

  Online published: 2025-09-16

摘要

采用静电纺丝技术制备了聚间苯二甲酰间苯二胺(poly (m-phenylene isophthalamide),PMIA)纳米纤维膜,创新性地在耐高温PMIA纳米纤维膜上引入了亲锂材料ZnO纳米片,成功构筑了一种多级微纳结构的纳米纤维复合隔膜.ZnO纳米片能够原位形成Li-Zn合金层,定向促进锂的均匀沉积,抑制锂枝晶的生长.借助这一设计,制备的锂离子电池(lithium-ion battery,LIB)用ZnO-PMIA复合隔膜实现了高离子电导率(0.750 mS/cm)和低界面阻抗(244 $\Omega$).ZnO-PMIA-0.1M复合隔膜组装的锂离子电池在0.5 C下表现出了优异的循环稳定性,100次循环后,电池比容量仍保持在较高水平(128.5 mA$\cdot$h/g).

本文引用格式

武思敏 , 胡祖明 , 于俊荣 , 王彦 , 李娜 . 锂离子电池用多级ZnO-PMIA纳米纤维隔膜的制备及性能[J]. 上海大学学报(自然科学版), 2025 , 31(4) : 607 -621 . DOI: 10.12066/j.issn.1007-2861.2672

Abstract

Electrostatic spinning technology was utilized to fabricate a poly (m-phenylene isophthalamide) (PMIA) nanofiber membrane and innovatively incorporated lithiophilic ZnO nanosheets onto the heat-resistant PMIA nanofiber membrane, successfully constructing a hierarchically structured nanofiber composite separator. The incorporated ZnO nanosheets facilitated the in-situ formation of the Li-Zn alloy layer, directionally promoted uniform lithium deposition, and suppressed the growth of lithium dendrites. With this design, the prepared lithium-ion batteries (LIBs) used ZnO-PMIA composite separators achieved an ionic conductivity of 0.750 mS/cm and a low interfacial impedance of 244 $\Omega$. Consequently, LIBs equipped with the ZnO-PMIA-0.1M composite separators exhibited exceptional cycling stability at 0.5 C, maintaining a high specific capacity of 128.5 mA$\cdot$h/g after 100 cycles.

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