Engineered interfaces between perovskite La_2/3xLi_3xTiO₃ electrolyte and Li metal for solid-state batteries.

ABSTRACT: Perovskite La_2/3xLi_3xTiO₃ (LLTO) materials are promising solid-state electrolytes for lithium metal batteries (LMBs) due to their intrinsic fire-resistance, high bulk ionic conductivity, and wide electrochemical window. However, their commercialization is hampered by high interfacial resistance, dendrite formation, and instability against Li metal. To address these challenges, we first prepared highly dense LLTO pellets with enhanced microstructure and high bulk ionic conductivity of 2.1×10-4 S cm^-1 at room temperature. Then, the LLTO pellets were coated with three polymer-based interfacial layers, including pure (polyethylene oxide) (PEO), dry polymer electrolyte of PEO-LITFSI (lithium bis (trifluoromethanesulfonyl) imide) (PL), and gel PEO-LiTF

SUBMITTER: Yan S 

PROVIDER: S-EPMC9399616 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature