Wu, Xiao-Wei and Seenivasan, Manojkumar and Karuppiah, Chelladurai and Zhang, Bo-Rong and Shih, Jeng-Ywan and Hung, Tai-Feng and Chien, Wen-Chen and Ramaraj, Sayee Kannan and Rajan, Jose and Yang, Chun-Chen (2024) Fabrication electro-spun Poly(vinyl alcohol)-Melamine nonwoven membrane composite separator for high-power lithium-ion batteries. Heliyon, 10 (14). pp. 1-14. ISSN 2405-8440. (Published)
|
Pdf
Fabrication electro-spun Poly(vinyl alcohol)-Melamine nonwoven.pdf Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (9MB) | Preview |
Abstract
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.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Composite separators; Electrospinning; Nonwoven; PVA polymers; Rechargeable Li-ion batteries; Surface modification |
| Subjects: | H Social Sciences > HD Industries. Land use. Labor Q Science > QD Chemistry T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Mrs. NOOR FATEEHA MOHAMAD |
| Date Deposited: | 27 Mar 2025 01:47 |
| Last Modified: | 27 Mar 2025 01:47 |
| URI: | http://umpir.ump.edu.my/id/eprint/44102 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |