Maximizing interface stability in all-solid-state lithium batteries through entropy stabilization and fast kinetics.

ABSTRACT: The positive electrode|electrolyte interface plays an important role in all-solid-state Li batteries (ASSLBs) based on garnet-type solid-state electrolytes (SSEs) like Li_6.4La₃Zr_1.4Ta_0.6O₁₂ (LLZTO). However, the trade-off between solid-solid contact and chemical stability leads to a poor positive electrode|electrolyte interface and cycle performance. In this study, we achieve thermodynamic compatibility and adequate physical contact between high-entropy cationic disordered rock salt positive electrodes (HE-DRXs) and LLZTO through ultrafast high-temperature sintering (UHS). This approach constructs a highly stable positive electrode|electrolyte interface, reducing the interface resistance to 31.6 Ω·cm² at 25 °C, making a 700

SUBMITTER: Kong X 

PROVIDER: S-EPMC11343751 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature