Abstract Scope |
Li, Na, and K, are ideal anode materials for rechargeable batteries, as they possess the largest theoretical capacities in their respective systems. However, when integrated with liquid electrolytes, they readily form dendrites, which leads to severe safety and cyclability issues. Even when paired with solid electrolytes, several issues still arise, including electrolyte fracture, metal penetration through the electrolyte, and/or loss of anode-electrolyte contact. This talk will discuss experimental studies of the mechanical behavior of Li, Na, and K over various strain rates, length scales, and temperatures. Temperature/size-dependent deformation mechanism maps emerge, enabling prediction of stresses that can develop in these metals under a broad range of operating conditions. I will also analyze how “size effects” may affect the stresses generated in metal protrusions at the solid electrolyte / anode interface. More broadly, this talk will outline the impact of the mechanical properties on the performance of solid-state batteries. |