|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Superionicity Emanating from Jammed States
||Venkata Ajay Annamareddy, Jacob Eapen
|On-Site Speaker (Planned)
||Venkata Ajay Annamareddy
Superionic conductors are multicomponent systems that are recognized for their incredibly high ionic conductivities in the solid state. While most ions are lethargic and are responsible for holding the structure together, a small subset of disordered ions usually contributes to the bulk of the solid state conductivity. By means of computer simulations, it has been recently recognized that mobile ions in several binary superionics portray dynamic correlations such as dynamic heterogeneity and facilitation – characteristics that are quintessential of thermally jammed or frustrated states. Here, we provide further evidence for jamming of mobile ions in a wider class of superionic conductors that involves several (at least, three) sub-lattices. Using atomistic simulations, we observe several critical attributes of jammed states in these complex superionics, thereby validating our original hypothesis that the high ionic conduction in the solid state is a natural consequence of mobile ions thermally driven to a jammed state.