Smoothed Particle Hydrodynamics Modeling of Electrodeposition and Dendritic Growth Under Migration- and Diffusion-Controlled Mass Transport
Smoothed Particle Hydrodynamics Modeling of Electrodeposition and Dendritic Growth Under Migration- and Diffusion-Controlled Mass Transport
复制标题
迁移和扩散控制的传质下电沉积和枝晶生长的平滑粒子流体动力学模型
DOI：
10.1115/1.4056327
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发表时间：
2023
影响因子：
2.5
通讯作者：
Ryan, Emily
中科院分区：
文献类型：
--
作者：
Cannon, Andrew;McDaniel, James G.;Ryan, Emily
在许多电化学过程中，带电物质的传输受能斯特-普朗克方程控制，该方程包括扩散和电化学迁移项。在这项工作中，提出了一种基于平滑粒子流体动力学 (SPH) 方法的多物理、多物种模型，用于对电沉积系统中的 Nernst-Planck 方程进行建模。当离子沉积到电极上时，就会发生电沉积。这些沉积物产生了复杂的边界几何形状，这对于数值方法来说可能具有挑战性。由于其粒子性质，SPH 对于具有移动和变形边界的系统来说是一种特别有效的数值方法。本文讨论了 Nernst-Planck 方程通过电沉积的 SPH 实现，并通过解析解和数值积分器验证了模型。提出了迁移和降水的收敛研究，以说明模型的准确性，并将沉积增长前沿与实验结果进行比较。
In many electrochemical processes, the transport of charged species is governed by the Nernst–Planck equation, which includes terms for both diffusion and electrochemical migration. In this work, a multi-physics, multi-species model based on the smoothed particle hydrodynamics (SPH) method is presented to model the Nernst–Planck equation in systems with electrodeposition. Electrodeposition occurs when ions are deposited onto an electrode. These deposits create complex boundary geometries, which can be challenging for numerical methods to resolve. SPH is a particularly effective numerical method for systems with moving and deforming boundaries due to its particle nature. This paper discusses the SPH implementation of the Nernst–Planck equations with electrodeposition and verifies the model with an analytical solution and a numerical integrator. A convergence study of migration and precipitation is presented to illustrate the model’s accuracy, along with comparisons of the deposition growth front to experimental results.