Toward Quantitative Phase-field Modeling of Dendritic Electrodeposition
Toward Quantitative Phase-field Modeling of Dendritic Electrodeposition
复制标题
树枝状电沉积的定量相场建模
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Daniel A. Cogswell
中科院分区：
文献类型：
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作者：
Daniel A. Cogswell
基于浓溶液的Marcus动力学，建立了一个电化学界面的薄界面相场模型，并用于模拟金属电沉积过程中的枝晶生长。该模型推导出在大的电化学电位，允许接口被加宽，以达到实验的长度和时间尺度，和电中性制定，以消除德拜长度。实现了与锌动力学的定量一致。降低交换电流密度可以抑制枝晶的生长。根据电解质的交换电流和重组能筛选电解质，可作为控制电池枝晶生长的一种策略。
A thin-interface phase-field model of electrochemical interfaces is developed based on Marcus kinetics for concentrated solutions, and used to simulate dendrite growth during electrodeposition of metals. The model is derived in the grand electrochemical potential to permit the interface to be widened to reach experimental length and time scales, and electroneutrality is formulated to eliminate the Debye length. Quantitative agreement with zinc kinetics is achieved. Reducing the exchange current density is found to suppress the growth of dendrites. Screening electrolytes by their exchange currents and reorganization energies is suggested as a strategy for controlling dendrite growth in batteries.