A new metal-organic rotaxane framework for enhanced ion conductivity of solid-state electrolyte in lithium-metal batteries

The composite polymer electrolyte has been obtained via incorporating LiCUST-701 (a new metal-organic rotaxane framework modified by Li+ ) into poly(ethylene oxide) (PEO) matrix and give a high ionic conductivity of 4.02 x 10-4 S/cm at 60 degrees C. DFT calculations were used to visualize the possible diffusion pathway of Li+ . The all-solid-state cell assembled with LiFePO4 , composite polymer electrolyte and lithium metal foil delivered with excellent cycling capability and stability even under high current densities. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.