کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4922754 1430195 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical simulation of phase separation in cathode materials of lithium ion batteries
ترجمه فارسی عنوان
شبیه سازی عددی جداسازی فاز در مواد کاتدی باتری های یون لیتیوم
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
A nonlinear initial boundary value problem for the lithium ion concentration, the electric potential and the electrode-electrolyte interface currents is introduced on the microscale. The model enables the resolution of porous electrode microstructures. Different exchange current densities for Butler-Volmer interface conditions are evaluated. The Cahn-Hilliard equation is used to describe the phase transition from solid-solution diffusion to two-phase dynamics. The resulting phase-field model is then discretized on a regular mesh. A first-order finite-volume scheme with an adaptive time integration method is applied. The parameters and their effects in the non-convex Helmholtz energy are investigated and explained. Furthermore, the numerical convergence of the scheme is examined. In order to illustrate the method, the charging process of several single-particles and a complex structure is numerically simulated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 100–101, 1 December 2016, Pages 456-469
نویسندگان
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