Clarifying the Dopant Local Structure and Effect on Ionic Conductivity in Garnet Solid-State Electrolytes for Lithium-Ion Batteries.

ABSTRACT: The high Li-ion conductivity and wide electrochemical stability of Li-rich garnets (Li₇La₃Zr₂O₁₂) make them one of the leading solid electrolyte candidates for solid-state batteries. Dopants such as Al and Ga are typically used to enable stabilization of the high Li⁺ ion-conductive cubic phase at room temperature. Although numerous studies exist that have characterized the electrochemical properties, structure, and lithium diffusion in Al- and Ga-LLZO, the local structure and site occupancy of dopants in these compounds are not well understood. Two broad ²⁷Al or ^69,71Ga resonances are often observed with chemical shifts consistent with tetrahedrally coordinated Al/Ga in the magic angle spinning nuclear magnetic re

SUBMITTER: Vema S 

PROVIDER: S-EPMC10687891 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature