Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries
Thermal management is critical to improving battery performance and suppressing thermal runaway. Besides developing external cooling technologies, it is important to understand and control thermal transport inside batteries. In this paper, heat transfer inside batteries is first analyzed and the the...
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Elsevier
2018
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| Online Access: | http://hdl.handle.net/1721.1/114572 https://orcid.org/0000-0001-7151-7355 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1811078212941250560 |
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| author | Yang, Yuan Huang, Xiaopeng Cao, Zeyuan Chen, Gang |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Yang, Yuan Huang, Xiaopeng Cao, Zeyuan Chen, Gang |
| author_sort | Yang, Yuan |
| collection | MIT |
| description | Thermal management is critical to improving battery performance and suppressing thermal runaway. Besides developing external cooling technologies, it is important to understand and control thermal transport inside batteries. In this paper, heat transfer inside batteries is first analyzed and the thermal conductivity of each component is measured. The results show that low thermal conductivity of the separator is one major barrier for heat transfer in Li-ion batteries. To improve thermal conductivity of the separator, a hierarchical nano/micro-Al₂O₃/polymer separator is prepared with thermal conductivity of ~1 W m⁻¹ K⁻¹, representing an enhancement of 5× compared to commercial polyethylene-based separators. Modeling has been performed to understand mechanism behind the enhancement of thermal conductivity, which suggests that addition of nanoparticles significantly reduces thickness of polymer coating on micron-sized Al₂O₃ particles and thus increase the thermal conductivity of the composite separator. This Al₂O₃-based separator also has similar ionic conductivity with commercial polymer separators. Such composite separator may have potential applications in developing batteries with better performance and safety. Keywords: Thermal conduction; Batteries; Nanocomposite |
| first_indexed | 2024-09-23T10:55:53Z |
| format | Article |
| id | mit-1721.1/114572 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:55:53Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1145722022-09-27T15:59:30Z Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries Yang, Yuan Huang, Xiaopeng Cao, Zeyuan Chen, Gang Massachusetts Institute of Technology. Department of Mechanical Engineering Chen, Gang Yang, Yuan Huang, Xiaopeng Chen, Gang Thermal management is critical to improving battery performance and suppressing thermal runaway. Besides developing external cooling technologies, it is important to understand and control thermal transport inside batteries. In this paper, heat transfer inside batteries is first analyzed and the thermal conductivity of each component is measured. The results show that low thermal conductivity of the separator is one major barrier for heat transfer in Li-ion batteries. To improve thermal conductivity of the separator, a hierarchical nano/micro-Al₂O₃/polymer separator is prepared with thermal conductivity of ~1 W m⁻¹ K⁻¹, representing an enhancement of 5× compared to commercial polyethylene-based separators. Modeling has been performed to understand mechanism behind the enhancement of thermal conductivity, which suggests that addition of nanoparticles significantly reduces thickness of polymer coating on micron-sized Al₂O₃ particles and thus increase the thermal conductivity of the composite separator. This Al₂O₃-based separator also has similar ionic conductivity with commercial polymer separators. Such composite separator may have potential applications in developing batteries with better performance and safety. Keywords: Thermal conduction; Batteries; Nanocomposite 2018-04-05T18:25:56Z 2018-04-05T18:25:56Z 2016-02 2016-01 Article http://purl.org/eprint/type/JournalArticle 2211-2855 http://hdl.handle.net/1721.1/114572 Yang, Yuan et al. “Thermally Conductive Separator with Hierarchical Nano/microstructures for Improving Thermal Management of Batteries.” Nano Energy 22 (April 2016): 301–309 © 2016 Elsevier Ltd https://orcid.org/0000-0001-7151-7355 https://orcid.org/0000-0002-3968-8530 en_US http://dx.doi.org/10.1016/j.nanoen.2016.01.026 Nano Energy Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Chen via Angie Locknar |
| spellingShingle | Yang, Yuan Huang, Xiaopeng Cao, Zeyuan Chen, Gang Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries |
| title | Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries |
| title_full | Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries |
| title_fullStr | Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries |
| title_full_unstemmed | Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries |
| title_short | Thermally conductive separator with hierarchical nano/microstructures for improving thermal management of batteries |
| title_sort | thermally conductive separator with hierarchical nano microstructures for improving thermal management of batteries |
| url | http://hdl.handle.net/1721.1/114572 https://orcid.org/0000-0001-7151-7355 https://orcid.org/0000-0002-3968-8530 |
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