Fabrication electro-spun Poly(vinyl alcohol)-Melamine nonwoven membrane composite separator for high-power lithium-ion batteries.

Autor:	Wu XW; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C.; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C., Seenivasan M; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C., Karuppiah C; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C., Zhang BR; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C.; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C., Shih JY; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C.; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C., James Li YJ; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C.; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C., Hung TF; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C., Chien WC; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C.; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C., Ramaraj SK; PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India., Jose R; Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia., Yang CC; Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, R.O.C.; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C.; Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan City 333, Taiwan.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2024 Jul 14; Vol. 10 (14), pp. e34436. Date of Electronic Publication: 2024 Jul 14 (Print Publication: 2024).
DOI:	10.1016/j.heliyon.2024.e34436
Abstrakt:	Current commercial separators used in lithium-ion batteries have inherent flaws, especially poor thermal stability, which pose substantial safety risks. This study introduces a high-safety composite membrane made from electrospun poly(vinyl alcohol)-melamine (PVAM) and polyvinylidene fluoride (PVDF) polymer solutions via a dip coating method, designed for high-voltage battery systems. The poly(vinyl alcohol) and melamine components enhance battery safety, while the PVDF coating improves lithium-ion conductivity. The dip-coated PVDF/Esp-PVAM composite separators were evaluated for electrolyte uptake, contact angle, thermal stability, porosity, electrochemical stability and ionic conductivity. Notably, our Dip 1 % PVDF@Esp-PVAM composite separator exhibited excellent wettability and a lithium-ion conductivity of approximately 7.75 × 10⁻⁴ S cm⁻ 1  at room temperature. These separators outperformed conventional PE separators in half-cells with Ni-rich NCM811 cathodes, showing exceptional cycling stability with 93.4 % capacity retention after 100 cycles at 1C/1C, as compared to 84.8 % for PE separators. Our Dip 1 % PVDF@Esp-PVAM composite separator demonstrates significant potential for enhancing the long-term durability and high-rate performance of lithium-ion batteries, making it a promising option for long-term energy storage applications. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2024 The Author(s).)
Databáze:	MEDLINE
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