High-performance all-solid-state batteries enabled by salt bonding to perovskite in poly(ethylene oxide).

ABSTRACT: Flexible and low-cost poly(ethylene oxide) (PEO)-based electrolytes are promising for all-solid-state Li-metal batteries because of their compatibility with a metallic lithium anode. However, the low room-temperature Li-ion conductivity of PEO solid electrolytes and severe lithium-dendrite growth limit their application in high-energy Li-metal batteries. Here we prepared a PEO/perovskite Li_3/8Sr_7/16Ta_3/4Zr_1/4O₃ composite electrolyte with a Li-ion conductivity of 5.4 × 10^-5 and 3.5 × 10^-4 S cm^-1 at 25 and 45 °C, respectively; the strong interaction between the F^- of TFSI^- (bis-trifluoromethanesulfonimide) and the surface Ta⁵⁺ of the perovskite improves the Li-ion transpor

SUBMITTER: Xu H 

PROVIDER: S-EPMC6754604 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature