Electrochemical characterizations: To measure the Li + and e -conductivity, 120~200 mg powder material was pressed into a pellet (diameter 11 mm; thickness 600 μm) under pressure (~120 MPa) at 120 °C. DC measurements were conducted on a Zahner IM6 electrochemical workstation. A typical PEO-LITFSI film (EO/Li=20; thickness 100 μm) was used as a passive layer between the working pellet and lithium foil. A Li|PEO|pellet|PEO|Li cell was tested with an applied voltage of 0.1 V at different temperatures from 60 °C to 80 °C to acquire Li + conductivity and an ss|pellet|ss (ss refers to stainless steel) cell was used to test e -conductivity. For evaluating the electrochemical stability window, the LHTO-pre/LHTO/LTO electrode slurry (powder: carbon black: polyvinylidene fluoride (PVDF) = 70:20:10) was cast onto the Al foil and Cu foil with average loading density of active materials of 1 mg cm -2 . The CV of Electrode|liquid electrolyte|Li cell (liquid electrolyte was 1 M LiPF 6 in EC: DC: EMC = 1:1:1 in volume) were tested at two potential window of 1.0~4.5 V and 0.01~3.0 V vs Li + /Li. Ceramic-based film (thickness 60 μm) was used as the solid electrolyte to examine the performance of LHTO in LIB. LHTO powder, PVDF, and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) was mixed in N-methyl-2-pyrrolidinone solvent with a mass ratio of 65: