Transport and mechanical behavior in PEO-LLZO composite electrolytes

• DOI: 10.1007/s10008-022-05231-w
• Publication Date: 2022-07-24T23:02:37Z
• Authors: Hong-Keun Kim; Pallab Barai; Kanchan Chavan; Venkat Srinivasan
• Keywords: Fast ion conductor

Abstract Composite solid electrolytes (CEs), wherein ion-conducting polymer and ceramic/glass is mixed, are promising candidates for all-solid-state batteries due to their promise of acceptable ionic conductivity mechanical properties compared individual constituents. While numerous studies have focused on improving the performance CEs, it still unclear what material targets that can result in improved macroscopic especially light coupled needs high transport strength these materials. In this study, a two-dimensional (2D) mathematical model developed investigate electrochemical characteristics CEs. The CEs consisting poly-ethylene-oxide (PEO) lithium lanthanum zirconium oxide (LLZO) ceramic with examination impact varying LLZO volume fractions. potential drop at PEO-LLZO interface evaluated using junction theory. Using experimental data from literature, estimates conductivity, effective transference number, stiffness improves increasing fraction LLZO, number depends interfacial resistance interface. Finally, study reports CE’s enhance Li-ion inhibit (Li) dendrite growth.