A Fiber-Reinforced Poly(ionic liquid) Solid Electrolyte with Low Flammability and High Conductivity for High-Performance Lithium-Metal Batteries.

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Applied Materials & Interfaces Pub Date : 2025-03-21 DOI:10.1021/acsami.4c23109

Junyan Tang, En Chen, Dehua Wang, Wen Qin, Siyu Fang, Ting Xu, Junjie Liu, Mi Tang, Zhengbang Wang

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Abstract

Construction of polymer-based solid electrolytes with both low flammability and high ionic conductivity for lithium-metal batteries is still a great challenge but highly desirable. Herein, we report on a series of fiber-reinforced poly(ionic liquid) solid electrolytes prepared through an in situ copolymerization of ionic liquid monomers (IL) and poly(ethylene glycol) diacrylate (PEGDA) units with different ratios inside a polyacrylonitrile (PAN) fiber membrane. Such PAN/Poly-IL-PEGDA composite electrolytes demonstrate promising low flammability due to the excellent fire-resistant feature of the employed IL units. Moreover, it is remarkable to see that the optimized PAN/Poly-IL-PEGDA-1 electrolyte also exhibits highly dense structure with low thickness (31 μm), high ionic conductivity (0.32 mS cm^-1 at 30 °C), and wide electrochemical window (up to 4.8 V). As a result, both LiFePO₄//Li and NCM//Li full cells with such an electrolyte exhibit both excellent rate capability and cycling stability. This study provides a simple strategy for preparing composite polymer electrolytes with low flammability and high conductivity for high-performance lithium-metal batteries.

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.