The Next-Generation Energy Materials: Enhancing Ion Conductivity in Solid-State Lithium-Ion Batteries for Application in Energy Conversion by Using Strain

Abstract

This research delves into the realm of solid-state batteries, focusing on the intriguing relationship between volumetric strain and conductivity enhancement in lithium-ion materials. Drawing inspiration from oxide-ion research, we develop a novel approach termed "Endopartical Strain" to understand how strain impacts the conductivity of lithium-ion materials. We introduce mathematical models that capture the intricate interplay between strain, conductivity, and material properties. Through meticulous data analysis, we examine the calculated average volumetric strain (ε ‾_V ) and corresponding conductivity enhancement (σ_(ε ‾,V)/σ_0 ) for various materials including LATP, LISICONs, and Garnets: LLZO. The study spans an average volumetric strain range of -4% to 4%, showcasing the exponential relationship between strain and conductivity enhancement. Our approach involves deriving the alpha (α) values, specific to each material, as a key factor influencing conductivity enhancement. By employing this methodology, we provide a comprehensive understanding of how different materials respond to strain-induced changes in conductivity. So, this research presents a pioneering exploration of the impact of strain on lithium-ion material conductivity. The developed models and equations shed light on the complex relationship between strain and conductivity enhancement, opening new avenues for optimizing solid-state battery performance. These findings hold significant promise for advancing knowledge in the field and driving the development of high-performance energy storage technologies.