Abstract
Solid electrolyte interface (SEI) layer morphology evolution has not yet been fully understood. A phase field model was employed and developed to simulate the SEI formation, growth and morphology evolution. SEI layer involves many boundaries formation and evolution among reaction products and their phase dynamic boundaries (interfaces). The phase field model can investigate phase boundaries without explicitly tracking the interfaces with sharp composition gradients. It also reveals the profiles of chemical potential and velocity in the electrolyte/SEI interfacial region. Most important, the present dveloped model has great potential to be extended to three dimensional space for SEI layer spatial growth inverstigation. In addition, other interfacial problems with more complex morphology evolution may also be investigated by the developed phase field model.
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