Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study
Li dendrite growth, which causes potential internal short circuit and reduces battery cycle life, is the main hazard to lithium metal batteries. Separators have the potential to suppress dendrite growth by regulating Li<sup>+</sup> distribution without increasing battery weight significa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/22/7912 |
| _version_ | 1797464777102983168 |
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| author | Yajie Li Liting Sha Peili Lv Na Qiu Wei Zhao Bin Chen Pu Hu Geng Zhang |
| author_facet | Yajie Li Liting Sha Peili Lv Na Qiu Wei Zhao Bin Chen Pu Hu Geng Zhang |
| author_sort | Yajie Li |
| collection | DOAJ |
| description | Li dendrite growth, which causes potential internal short circuit and reduces battery cycle life, is the main hazard to lithium metal batteries. Separators have the potential to suppress dendrite growth by regulating Li<sup>+</sup> distribution without increasing battery weight significantly. However, the underlying mechanism is still not fully understood. In this paper, we apply an electrochemical phase-field model to investigate the influences of separator thickness and surface coating on dendrite growth. It is found that dendrite growth under thicker separators is relatively uniform and the average dendrite length is shorter since the ion concentration within thicker separators is more uniform. Moreover, compared to single layer separators, the electrodeposition morphology under particle-coated separators is smoother since the particles can effectively regulate Li ionic flux and homogenize Li deposition. This study provides significant guidance for designing separators that inhibit dendrites effectively. |
| first_indexed | 2024-03-09T18:13:02Z |
| format | Article |
| id | doaj.art-adb00c63ecdd42aeb963595a283f7eca |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:13:02Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-adb00c63ecdd42aeb963595a283f7eca2023-11-24T09:01:01ZengMDPI AGMaterials1996-19442022-11-011522791210.3390/ma15227912Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field StudyYajie Li0Liting Sha1Peili Lv2Na Qiu3Wei Zhao4Bin Chen5Pu Hu6Geng Zhang7School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaTencent Inc., Shanghai 200233, ChinaMechanical and Electrical Engineering College, Hainan University, Haikou 570228, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaSchool of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaHubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, ChinaPhysical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi ArabiaLi dendrite growth, which causes potential internal short circuit and reduces battery cycle life, is the main hazard to lithium metal batteries. Separators have the potential to suppress dendrite growth by regulating Li<sup>+</sup> distribution without increasing battery weight significantly. However, the underlying mechanism is still not fully understood. In this paper, we apply an electrochemical phase-field model to investigate the influences of separator thickness and surface coating on dendrite growth. It is found that dendrite growth under thicker separators is relatively uniform and the average dendrite length is shorter since the ion concentration within thicker separators is more uniform. Moreover, compared to single layer separators, the electrodeposition morphology under particle-coated separators is smoother since the particles can effectively regulate Li ionic flux and homogenize Li deposition. This study provides significant guidance for designing separators that inhibit dendrites effectively.https://www.mdpi.com/1996-1944/15/22/7912lithium dendritephase-field simulationseparatorthicknesssurface coating |
| spellingShingle | Yajie Li Liting Sha Peili Lv Na Qiu Wei Zhao Bin Chen Pu Hu Geng Zhang Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study Materials lithium dendrite phase-field simulation separator thickness surface coating |
| title | Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study |
| title_full | Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study |
| title_fullStr | Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study |
| title_full_unstemmed | Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study |
| title_short | Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study |
| title_sort | influences of separator thickness and surface coating on lithium dendrite growth a phase field study |
| topic | lithium dendrite phase-field simulation separator thickness surface coating |
| url | https://www.mdpi.com/1996-1944/15/22/7912 |
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