کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7158956 1462801 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A computational investigation of thermal effect on lithium dendrite growth
ترجمه فارسی عنوان
بررسی محاسباتی اثرات حرارتی بر رشد دندریت لیتیوم
کلمات کلیدی
باتری یون لیتیوم، لیتیم دندریت، مورفولوژی دندریت، شیب درجه حرارت، گرما داخلی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
This paper aims to computationally investigate the thermal effect, combining the internal heat and the ambient temperature, on the lithium (Li) dendrite growth process. To achieve this, the recently developed phase-field Li-dendrite model is further extended by coupling with a heat transfer model. The two models are linked via a temperature-dependent ion diffusion coefficient to investigate the evolution of the morphology and size of dendrites. Three levels of cases are used to progressively investigate the thermal effect on Li dendrites: (1) uniform ambient temperature, (2) temperature gradient along the charging direction, and (3) internal heat-induced spatially distributed temperature. The results show that the normalized dendrite length decreases as the ambient temperature increases, which agrees well with the published experimental measurements. The temperature gradient is applied in the 2-D system showing that the formation of lateral branches can be prevented with the presence of the temperature gradient. The third case shows that the temperature significantly increases at the dendrite-electrolyte interface, and the dendrite deviates from the tree-type shape to a nearly rhombic shape. The simulation results provide valuable bases for the future comprehensive studies of the temperature-dependent Li dendrite growth process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 161, 1 April 2018, Pages 193-204
نویسندگان
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