Advances in Nonwoven-Based Separators for Lithium-Ion Batteries
Yan Yu , Man Liu , Ziye Chen , Zhihao Zhang , Tian Qiu , Zexu Hu , Hengxue Xiang , Liping Zhu , Guiyin Xu , Meifang Zhu
Advanced Fiber Materials ›› 2023, Vol. 5 ›› Issue (6) : 1827 -1851.
Advances in Nonwoven-Based Separators for Lithium-Ion Batteries
Lithium-ion batteries (LIBs) are energy-storage devices with a high-energy density in which the separator provides a physical barrier between the cathode and anode, to prevent electrical short circuits. To meet the demands of high-performance batteries, the separator must have excellent electrolyte wettability, thermotolerance, mechanical strength, highly porous structures, and ionic conductivity. Numerous nonwoven-based separators have been used in LIBs due to their high porosity and large surface-to-volume ratios. However, the fabrication of multi-functional fibers, the construction of nonwoven separators, and their integration into energy-storage devices present grand challenges in fundamental theory and practical implementation. Herein, we systematically review the up-to-date concerning the design and preparation of nonwoven-based separators for LIBs. Recent progress in monolayer, composite, and solid electrolyte nonwoven-based separators and their fabrication strategies is discussed. Future challenges and directions toward advancements in separator technologies are also discussed to obtain separators with remarkable performance for high-energy density batteries.
This work was financially supported by the National Key Research and Development Program of China(2022YFB3803502)
the National Key Research and Development Program of China(22Z10303)
the Fundamental Research Funds for the Central Universities(2232021D-21)
the Open Project Program of High-Tech Organic Fibers Key Laboratory of Sichuan Province(PLN2022-11)
Graduate Student Innovation Fund of Donghua University(CUSF-DH-D-2022014)
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