Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery
In this research, inorganic material type and content influence on coating of commercially available polypropylene (PP) separator were studied for improving its performance and safety as lithium ion battery separator. Heat-resistant nanopowders of Al2O3, SiO2 and ZrO2 were coated using polyvinyliden...
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| Format: | Article |
| Language: | English |
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Nanoscience and Nanotechnology Research Center, University of Kashan
2019-10-01
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| Series: | Journal of Nanostructures |
| Subjects: | |
| Online Access: | http://jns.kashanu.ac.ir/article_99379_febca2ef479348b51a1d980d0cca31a5.pdf |
| _version_ | 1818030060666355712 |
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| author | Ehsan Shekarian Mohammad Reza Jafari Nasr Toraj Mohammadi Omid Bakhtiari Mehran Javanbakht |
| author_facet | Ehsan Shekarian Mohammad Reza Jafari Nasr Toraj Mohammadi Omid Bakhtiari Mehran Javanbakht |
| author_sort | Ehsan Shekarian |
| collection | DOAJ |
| description | In this research, inorganic material type and content influence on coating of commercially available polypropylene (PP) separator were studied for improving its performance and safety as lithium ion battery separator. Heat-resistant nanopowders of Al2O3, SiO2 and ZrO2 were coated using polyvinylidene fluoride (PVDF) binder. Coating effects on the separators morphology, wettability, high temperatures dimensional stability and electrochemical properties were investigated via their scanning electron microscopy images, electrolyte contact angles, electrolyte uptakes, thermal shrinkages analysis and ion conductivities. Furthermore, their performances were studied as the lithium ion batteries separator. All the coated separators have lower thermal shrinkages compared to the commercial neat PP separator. In addition, almost all of the coated separators have shown higher porosities and electrolyte uptakes than those of the commercial neat PP separators. The coated separator with Al2O3 / binder ratio of 8 (MOA8) revealed highest improvement in electrolyte contact angle of 0 °, electrolyte uptake of 218 % (2.04 times increment), ion conductivity of 1.685 mS/cm (1.89 times increment), 52 % porosity compared with the neat PP separator due to proper coating surface morphology, interstitial cavities and a higher Al2O3 dielectric constant than SiO2. In terms of assembled battery discharge capacity reduction after 100 cycles, MOA8 separator showed better cyclic performance as 8.89 % compared with that of the neat PP separator as 16.6 %. |
| first_indexed | 2024-12-10T05:29:35Z |
| format | Article |
| id | doaj.art-203a92f183fc4bb29a8c760f9b60f493 |
| institution | Directory Open Access Journal |
| issn | 2251-7871 2251-788X |
| language | English |
| last_indexed | 2024-12-10T05:29:35Z |
| publishDate | 2019-10-01 |
| publisher | Nanoscience and Nanotechnology Research Center, University of Kashan |
| record_format | Article |
| series | Journal of Nanostructures |
| spelling | doaj.art-203a92f183fc4bb29a8c760f9b60f4932022-12-22T02:00:36ZengNanoscience and Nanotechnology Research Center, University of KashanJournal of Nanostructures2251-78712251-788X2019-10-019473675010.22052/JNS.2019.04.01599379Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion batteryEhsan Shekarian0Mohammad Reza Jafari Nasr1Toraj Mohammadi2Omid Bakhtiari3Mehran Javanbakht4Department of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, IranDepartment of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, IranResearch Center for Membrane Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, IranResearch Center for Membrane Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, IranDepartment of Chemistry, Amirkabir University of Technology, Tehran, Iran.In this research, inorganic material type and content influence on coating of commercially available polypropylene (PP) separator were studied for improving its performance and safety as lithium ion battery separator. Heat-resistant nanopowders of Al2O3, SiO2 and ZrO2 were coated using polyvinylidene fluoride (PVDF) binder. Coating effects on the separators morphology, wettability, high temperatures dimensional stability and electrochemical properties were investigated via their scanning electron microscopy images, electrolyte contact angles, electrolyte uptakes, thermal shrinkages analysis and ion conductivities. Furthermore, their performances were studied as the lithium ion batteries separator. All the coated separators have lower thermal shrinkages compared to the commercial neat PP separator. In addition, almost all of the coated separators have shown higher porosities and electrolyte uptakes than those of the commercial neat PP separators. The coated separator with Al2O3 / binder ratio of 8 (MOA8) revealed highest improvement in electrolyte contact angle of 0 °, electrolyte uptake of 218 % (2.04 times increment), ion conductivity of 1.685 mS/cm (1.89 times increment), 52 % porosity compared with the neat PP separator due to proper coating surface morphology, interstitial cavities and a higher Al2O3 dielectric constant than SiO2. In terms of assembled battery discharge capacity reduction after 100 cycles, MOA8 separator showed better cyclic performance as 8.89 % compared with that of the neat PP separator as 16.6 %.http://jns.kashanu.ac.ir/article_99379_febca2ef479348b51a1d980d0cca31a5.pdfrechargeable lithium-ion batteriespolypropylene separatorcoatingpvdfmetal oxide |
| spellingShingle | Ehsan Shekarian Mohammad Reza Jafari Nasr Toraj Mohammadi Omid Bakhtiari Mehran Javanbakht Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery Journal of Nanostructures rechargeable lithium-ion batteries polypropylene separator coating pvdf metal oxide |
| title | Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery |
| title_full | Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery |
| title_fullStr | Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery |
| title_full_unstemmed | Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery |
| title_short | Enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium-ion battery |
| title_sort | enhanced wettability and electrolyte uptake of coated commercial polypropylene separators with inorganic nanopowders for application in lithium ion battery |
| topic | rechargeable lithium-ion batteries polypropylene separator coating pvdf metal oxide |
| url | http://jns.kashanu.ac.ir/article_99379_febca2ef479348b51a1d980d0cca31a5.pdf |
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