A fluorinated metal-organic framework-based quasi-solid electrolyte for stabilizing Li metal anodes.

A fluorinated quasi-solid electrolyte (QSE) with a high conductivity of 2.3 mS cm -1 is meticulously designed for Li metal batteries. It facilitates the formation of a LiF-rich solid electrolyte interface that effectively enhances the reversibility of Li anodes. The assembled Li|QSE|LiFePO 4 batteries exhibit 92.3% capacity retention after 1500 cycles and an impressive capacity of up to 45 mA h g -1 at 20C.