PEO FILM, PREPARATION METHOD THEREOF, AND SOLID-STATE BATTERY

The disclosure relates to the battery field and a PEO film, a preparation method thereof, and a solid-state battery are provided. A molecular structure of the PEO film includes a structural unit B, and the structural unit B includes -CH=CH-O-. Through using the PEO film, the problems of poor conductivity, poor contact performance with anode and cathode and poor stability found in an existing PEO film may thus be solved. In this way, conductivity of the PEO film is increased and stability of the PEO film itself is enhanced.