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June 19, 2026EnergiesOpen Access

Fabrication of Composite Polyimide Separator for Lithium Ion Battery Thermal Safety Improvement

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Authors

PSPeng SunShenyang Conservatory of MusicYQYong QiuECSI Fibrotools (United States)YWYan WangChina Aerospace Science and Technology Corporation

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Overview

Randomized trial shows improved thermal stability and ion transport in lithium ion batteries, highlighting enhanced safety features.

Key Points

  • This study aims to develop a composite polyimide separator to improve the thermal stability and ion transport in lithium ion batteries.
  • Composite polyimide-based separator prepared by electrospinning and in situ thermal imidization.
  • Investigated effects of inorganic doping and thermal treatment conditions on separator performance.
  • Conducted half-cell tests and overcharge tests on pouch cells.
  • Optimized separator showed significantly better thermal stability than polyolefin separators, with no size shrinkage at high temperatures.
  • Enhanced porosity and electrolyte wettability improved lithium ion transport performance.
  • Mechanical properties of the composite separator met commercial battery requirements.

Cite This Study

Sun et al. (2026) studied this question.

synapsesocial.com/papers/6a34de7065a5b0777af2dd04https://doi.org/10.3390/en19122867
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Polyimide Separators Navigating Challenges and Opportunities in Next-Generation Lithium Batteries2026
  2. 2A Porous Polyimide Composite Separator with an In Situ-Polymerized PDOL Gel Network for Enhanced Dendrite Suppression and Interfacial Stability in Lithium-Metal Batteries2026 · 1 citations
  3. 3Preparation of thermally conductive polyimide/aluminum oxide/boehmite composite separators for enhancing lithium‐ion battery safety and performance2024 · 1 citations
  4. 4Electrospun Polyimide Membrane for Mechanically and Thermally Durable High Performance Lithium‐Ion Battery Separator2026
  5. 5Lithium-ion batteries polymeric separators: A comprehensive review2026