On Transport and Strain Effects in Solid Ionic Conductors and Solid-State Battery Composites

In this presentation, we will show that it is not only important to find fast ionic conductors, but that fast ionic conduction is paramount within solid state battery composites. Measuring the effective ionic transport in electrode composites provides an avenue to explore transport and stability limitations that in turn provide better criteria for solid state battery performance. These transport limitations will be explored as a function of materials composition, particle sizes and processing.<br/>In a second part of this presentation, we will show that fast ionic conductors exhibit low thermal conductivities that may be detrimental to solid state battery operation. The low thermal conductivity stems from large anharmonicities and diffuson-based thermal transport, all of which extends into solid-state battery composites.<br/>Finally, we will explore strain effects in solid electrolytes and how pressure affects microstructure, transport, and electrochemical properties of solid ionic conductors.