Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method
The growing interest in wearable and portable devices has stimulated the need for flexible and stretchable lithium-ion batteries (LiBs). A crucial component in these batteries is the separator, which provides a pathway for Li-ion transfer and prevents electrode contact. In a flexible and stretchable...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/16/3/357 |
| _version_ | 1797318333167566848 |
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| author | Tae Hyung Kim MinSu Kim Eun Ji Kim Minu Ju Ji Soo Kim Seung Hee Lee |
| author_facet | Tae Hyung Kim MinSu Kim Eun Ji Kim Minu Ju Ji Soo Kim Seung Hee Lee |
| author_sort | Tae Hyung Kim |
| collection | DOAJ |
| description | The growing interest in wearable and portable devices has stimulated the need for flexible and stretchable lithium-ion batteries (LiBs). A crucial component in these batteries is the separator, which provides a pathway for Li-ion transfer and prevents electrode contact. In a flexible and stretchable LiB, the separator must exhibit stretchability and elasticity akin to its existing counterparts. Here, we developed a non-modified thermoplastic polyurethane (TPU) separator using the non-solvent induced phase separation (NIPS) technique. We compared their performance with commercially available polypropylene (PP) separators. Our results demonstrate that TPU separators exhibit superior elasticity based on repeated stretch/release tests with excellent thermal stability and electrolyte wettability. Furthermore, our findings confirm that TPU separators, even after being repeatedly stretched and released, can function effectively without severe damage in a fabricated coin cell LiB with high oxidative stability, as evidenced by linear sweep voltammetry, like commercially available separators. |
| first_indexed | 2024-03-08T03:50:52Z |
| format | Article |
| id | doaj.art-90d2637079ce46bf90ff72813ff2675a |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-08T03:50:52Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-90d2637079ce46bf90ff72813ff2675a2024-02-09T15:20:48ZengMDPI AGPolymers2073-43602024-01-0116335710.3390/polym16030357Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation MethodTae Hyung Kim0MinSu Kim1Eun Ji Kim2Minu Ju3Ji Soo Kim4Seung Hee Lee5Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of KoreaDepartment of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of KoreaDepartment of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of KoreaDepartment of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of KoreaDepartment of JBNU-KIST Industry-Academia Convergence Research, Jeonbuk National University, Jeonju 54896, Republic of KoreaDepartment of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of KoreaThe growing interest in wearable and portable devices has stimulated the need for flexible and stretchable lithium-ion batteries (LiBs). A crucial component in these batteries is the separator, which provides a pathway for Li-ion transfer and prevents electrode contact. In a flexible and stretchable LiB, the separator must exhibit stretchability and elasticity akin to its existing counterparts. Here, we developed a non-modified thermoplastic polyurethane (TPU) separator using the non-solvent induced phase separation (NIPS) technique. We compared their performance with commercially available polypropylene (PP) separators. Our results demonstrate that TPU separators exhibit superior elasticity based on repeated stretch/release tests with excellent thermal stability and electrolyte wettability. Furthermore, our findings confirm that TPU separators, even after being repeatedly stretched and released, can function effectively without severe damage in a fabricated coin cell LiB with high oxidative stability, as evidenced by linear sweep voltammetry, like commercially available separators.https://www.mdpi.com/2073-4360/16/3/357polymeric membranesstretchable membranesporous membranesnon-solvent induced phase separation |
| spellingShingle | Tae Hyung Kim MinSu Kim Eun Ji Kim Minu Ju Ji Soo Kim Seung Hee Lee Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method Polymers polymeric membranes stretchable membranes porous membranes non-solvent induced phase separation |
| title | Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method |
| title_full | Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method |
| title_fullStr | Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method |
| title_full_unstemmed | Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method |
| title_short | Highly Stretchable Thermoplastic Polyurethane Separators for Li-Ion Batteries Based on Non-Solvent-Induced Phase Separation Method |
| title_sort | highly stretchable thermoplastic polyurethane separators for li ion batteries based on non solvent induced phase separation method |
| topic | polymeric membranes stretchable membranes porous membranes non-solvent induced phase separation |
| url | https://www.mdpi.com/2073-4360/16/3/357 |
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