Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries
As an important element of lithium-ion batteries (LIBs), the separator plays a critical role in the safety and comprehensive performance of the battery. Electrospun nanofiber separators have a high porosity and good electrolyte affinity, which are favorable to the transference of lithium ions. In th...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-12-01
|
| Series: | Batteries |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2313-0105/10/1/6 |
| _version_ | 1797344610081570816 |
|---|---|
| author | Wenfei Ding Lan Xu |
| author_facet | Wenfei Ding Lan Xu |
| author_sort | Wenfei Ding |
| collection | DOAJ |
| description | As an important element of lithium-ion batteries (LIBs), the separator plays a critical role in the safety and comprehensive performance of the battery. Electrospun nanofiber separators have a high porosity and good electrolyte affinity, which are favorable to the transference of lithium ions. In this paper, the batch preparation of polyacrylonitrile (PAN)-based nanofiber separators are obtained via spherical section free surface electrospinning (SSFSE). Introducing an appropriate amount of polyester polyurethane (PU) can effectively enhance the mechanical property of PAN nanofiber separators and help the separators resist the external force extrusion. The results show that when PAN:PU = 8:2, the porosity and electrolyte uptake rate of the composite nanofiber separator (PAN-2) are 62.9% and 643.3%, respectively, exhibiting a high ionic conductivity (1.90 mS/cm). Additionally, the coin battery assembled with PAN-2 as a separator (LiFePO<sub>4</sub>/PAN-2/lithium metal) shows good cycling performance and good rate performance, with a capacity retention rate of 93.9% after 100 cycles at 0.5 C, indicating that the battery with PAN-2 has a good application potential in advanced energy storage. |
| first_indexed | 2024-03-08T11:05:13Z |
| format | Article |
| id | doaj.art-533bfe5431834fe28f8f7123d118b2d7 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-08T11:05:13Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-533bfe5431834fe28f8f7123d118b2d72024-01-26T15:04:22ZengMDPI AGBatteries2313-01052023-12-01101610.3390/batteries10010006Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion BatteriesWenfei Ding0Lan Xu1College of Textile and Engineering, Soochow University, Suzhou 215123, ChinaCollege of Textile and Engineering, Soochow University, Suzhou 215123, ChinaAs an important element of lithium-ion batteries (LIBs), the separator plays a critical role in the safety and comprehensive performance of the battery. Electrospun nanofiber separators have a high porosity and good electrolyte affinity, which are favorable to the transference of lithium ions. In this paper, the batch preparation of polyacrylonitrile (PAN)-based nanofiber separators are obtained via spherical section free surface electrospinning (SSFSE). Introducing an appropriate amount of polyester polyurethane (PU) can effectively enhance the mechanical property of PAN nanofiber separators and help the separators resist the external force extrusion. The results show that when PAN:PU = 8:2, the porosity and electrolyte uptake rate of the composite nanofiber separator (PAN-2) are 62.9% and 643.3%, respectively, exhibiting a high ionic conductivity (1.90 mS/cm). Additionally, the coin battery assembled with PAN-2 as a separator (LiFePO<sub>4</sub>/PAN-2/lithium metal) shows good cycling performance and good rate performance, with a capacity retention rate of 93.9% after 100 cycles at 0.5 C, indicating that the battery with PAN-2 has a good application potential in advanced energy storage.https://www.mdpi.com/2313-0105/10/1/6lithium-ion batteriesnanofiber separatorsbatch preparationpolyacrylonitrilepolyester polyurethane |
| spellingShingle | Wenfei Ding Lan Xu Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries Batteries lithium-ion batteries nanofiber separators batch preparation polyacrylonitrile polyester polyurethane |
| title | Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries |
| title_full | Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries |
| title_fullStr | Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries |
| title_full_unstemmed | Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries |
| title_short | Batch Fabrication of Electrospun PAN/PU Composite Separators for Safe Lithium-Ion Batteries |
| title_sort | batch fabrication of electrospun pan pu composite separators for safe lithium ion batteries |
| topic | lithium-ion batteries nanofiber separators batch preparation polyacrylonitrile polyester polyurethane |
| url | https://www.mdpi.com/2313-0105/10/1/6 |
| work_keys_str_mv | AT wenfeiding batchfabricationofelectrospunpanpucompositeseparatorsforsafelithiumionbatteries AT lanxu batchfabricationofelectrospunpanpucompositeseparatorsforsafelithiumionbatteries |