Title | Nonlinear phase-field model for electrode-electrolyte interface evolution |
Publication Type | Journal Article |
Year of Publication | 2012 |
Authors | Liang, L, Qi, Y, Xue, F, Bhattacharya, S, Harris, SJ, Chen, LQing |
Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |
Volume | 86 |
Date Published | 11 |
ISSN | 1539-3755 |
Abstract | A nonlinear phase-field model is proposed for modeling microstructure evolution during highly nonequilibrium processes. We consider electrochemical reactions at electrode-electrolyte interfaces leading to electroplating and electrode-electrolyte interface evolution. In contrast to all existing phase-field models, the rate of temporal phase-field evolution and thus the interface motion in the current model is considered nonlinear with respect to the thermodynamic driving force. It produces Butler-Volmer-type electrochemical kinetics for the dependence of interfacial velocity on the overpotential at the sharp-interface limit. At the low overpotential it recovers the conventional Allen-Cahn phase-field equation. This model is generally applicable to many other highly nonequilibrium processes where linear kinetics breaks down. © 2012 American Physical Society. |
DOI | 10.1103/PhysRevE.86.051609 |