Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries
The electric vehicle and energy storage markets have grown rapidly in recent years. Thermal runaway caused by malfunctioning Li-ion batteries is an urgent issue with many causes (e.g., mechanical, electrical, and thermal abuse). The most common cause of thermal runaway is the formation of an interna...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/21/4474 |
| _version_ | 1797466721806712832 |
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| author | Hyoungwoo Choi Byoung-Sun Lee |
| author_facet | Hyoungwoo Choi Byoung-Sun Lee |
| author_sort | Hyoungwoo Choi |
| collection | DOAJ |
| description | The electric vehicle and energy storage markets have grown rapidly in recent years. Thermal runaway caused by malfunctioning Li-ion batteries is an urgent issue with many causes (e.g., mechanical, electrical, and thermal abuse). The most common cause of thermal runaway is the formation of an internal short circuit because of damage to the separator. There has been significant effort to improve the design of separators, but to our knowledge, only inorganic nanoparticle coatings are used in commercial Li-ion batteries. Here, hybrid organic/inorganic coating layers are synthesized in a pilot-scale process that was developed from a crosslinkable polyamide-imide synthesis technique. The fabrication process is optimized to achieve reproducible hybrid organic/inorganic coating layers that are thin (≤4 μm), permeable (≤250 s/100 cc), and thermally stable beyond 150 °C. The hybrid coating layer is applied to mini-18650 Li-ion cells to show that the discharge capacity did not change at low discharge rates, and the retention capacity after 500 cycles was better than that of the reference cells used for comparison. This work demonstrates that a novel hybrid coating layer has the potential to improve the stability of commercial Li-ion batteries. |
| first_indexed | 2024-03-09T18:43:45Z |
| format | Article |
| id | doaj.art-13c4f91f1df144618ac065e75720b46e |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T18:43:45Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-13c4f91f1df144618ac065e75720b46e2023-11-24T06:26:51ZengMDPI AGPolymers2073-43602022-10-011421447410.3390/polym14214474Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable BatteriesHyoungwoo Choi0Byoung-Sun Lee1Samsung Advanced Institute of Technology, Suwon 16678, KoreaDepartment of Fiber Convergence Materials Engineering, School of Polymer System, Dankook University, Yongin 16890, KoreaThe electric vehicle and energy storage markets have grown rapidly in recent years. Thermal runaway caused by malfunctioning Li-ion batteries is an urgent issue with many causes (e.g., mechanical, electrical, and thermal abuse). The most common cause of thermal runaway is the formation of an internal short circuit because of damage to the separator. There has been significant effort to improve the design of separators, but to our knowledge, only inorganic nanoparticle coatings are used in commercial Li-ion batteries. Here, hybrid organic/inorganic coating layers are synthesized in a pilot-scale process that was developed from a crosslinkable polyamide-imide synthesis technique. The fabrication process is optimized to achieve reproducible hybrid organic/inorganic coating layers that are thin (≤4 μm), permeable (≤250 s/100 cc), and thermally stable beyond 150 °C. The hybrid coating layer is applied to mini-18650 Li-ion cells to show that the discharge capacity did not change at low discharge rates, and the retention capacity after 500 cycles was better than that of the reference cells used for comparison. This work demonstrates that a novel hybrid coating layer has the potential to improve the stability of commercial Li-ion batteries.https://www.mdpi.com/2073-4360/14/21/4474crosslinkable polyamide-imidehybrid organic/inorganic coatingpilot-scalemini-18650 Li-ion cellthermal stability |
| spellingShingle | Hyoungwoo Choi Byoung-Sun Lee Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries Polymers crosslinkable polyamide-imide hybrid organic/inorganic coating pilot-scale mini-18650 Li-ion cell thermal stability |
| title | Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries |
| title_full | Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries |
| title_fullStr | Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries |
| title_full_unstemmed | Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries |
| title_short | Pilot Scale Hybrid Organic/Inorganic Coatings on a Polyolefin Separator to Enhance Dimensional Stability for Thermally Stable Long-Life Rechargeable Batteries |
| title_sort | pilot scale hybrid organic inorganic coatings on a polyolefin separator to enhance dimensional stability for thermally stable long life rechargeable batteries |
| topic | crosslinkable polyamide-imide hybrid organic/inorganic coating pilot-scale mini-18650 Li-ion cell thermal stability |
| url | https://www.mdpi.com/2073-4360/14/21/4474 |
| work_keys_str_mv | AT hyoungwoochoi pilotscalehybridorganicinorganiccoatingsonapolyolefinseparatortoenhancedimensionalstabilityforthermallystablelongliferechargeablebatteries AT byoungsunlee pilotscalehybridorganicinorganiccoatingsonapolyolefinseparatortoenhancedimensionalstabilityforthermallystablelongliferechargeablebatteries |