Abstract Scope |
Surfaces and interfaces in ionic ceramics play a pivotal role in defining the transport limitations in many of existing and emerging applications in energy-related systems, including fuel cells, rechargeable batteries, as well as electronics such as those found in semiconducting, mixed ionic, ferroelectric, and piezotronic applications. By starting from a thermodynamically consistent phase field formulation, an update on the progress on the analytical and numerical modeling effort will be presented, describing the structural, electrical, mechanical, and thermochemical conditions that will induce an interfacial electrically conductive to insulator transition, their stability and phase transformation kinetics. Applications to lithium-ion battery systems, including LiNiMnCoO2, LiCoO2, and LiFePO4 will be discussed, highlighting the different mechanisms controlling their interfacial behavior. The impact on the macroscopically observed frequency-dependent impedance behavior will be detailed. Comparisons against available experimental data will be made. |