High-room-temperature ionic conductivity solid-state polymer composite electrolyte for metal lithium battery and preparation method thereof

The invention relates to a high-room-temperature ionic conductivity solid-state polymer composite electrolyte for a metal lithium battery and a preparation method thereof. The high-room-temperature ionic conductivity solid-state polymer composite electrolyte mainly comprises four components A, B, C and D, wherein the component A is 100 parts by weight of double-bond-terminated polyoxyethylene, the component B is 10-30 parts by weight of unsaturated monomers rich in polar groups, the component C is 1-10 parts by weight of double-bond-modified inorganic nanoparticles, and the component D is 20-35 parts by weight of lithium salt. According to the solid-state polymer composite electrolyte disclosed by the invention, multiple hydrogen-bond interaction is formed by utilizing the component B, so that a rich lithium environment is brought to a system; and multiple lithium actions are rearranged on the surface of the component C, so that a lithium ion carrying transmission mechanism is formed, and the room-temperature