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Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study

التفاصيل البيبلوغرافية
العنوان: Influences of Separator Thickness and Surface Coating on Lithium Dendrite Growth: A Phase-Field Study
المؤلفون: Yajie Li, Liting Sha, Peili Lv, Na Qiu, Wei Zhao, Bin Chen, Pu Hu, Geng Zhang
المصدر: Materials, Vol 15, Iss 22, p 7912 (2022)
بيانات النشر: MDPI AG, 2022.
سنة النشر: 2022
المجموعة: LCC:Technology
LCC:Electrical engineering. Electronics. Nuclear engineering
LCC:Engineering (General). Civil engineering (General)
LCC:Microscopy
LCC:Descriptive and experimental mechanics
مصطلحات موضوعية: lithium dendrite, phase-field simulation, separator, thickness, surface coating, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85
الوصف: 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+ 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.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1996-1944
Relation: https://www.mdpi.com/1996-1944/15/22/7912; https://doaj.org/toc/1996-1944
DOI: 10.3390/ma15227912
URL الوصول: https://doaj.org/article/adb00c63ecdd42aeb963595a283f7eca
رقم الأكسشن: edsdoj.b00c63ecdd42aeb963595a283f7eca
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19961944
DOI:10.3390/ma15227912