▎ 摘　　要

NOVELTY - The method comprises (i) uniformly dispersing the oxidized graphene in water, mixing with MXene water dispersion liquid, and ultrasonically dispersing to obtain MXene/oxidized graphene composite suspension, (ii) sequentially filtering and drying the liquid to obtain an MXene/graphene oxide film, and (iii) subjecting the film to high-temperature treatment to obtain a graphene oxide film. USE - Method for manufacturing flexible current collector. ADVANTAGE - The method solves the problem of poor adhesion between hard carbon materials and conventional current collectors, battery failure caused by volume changes during charging and discharging, prevents slurry shrinkage caused by surface tension, increases the binding force with the MXene/reducing oxidation of the oxide graphene can contain the change of the volume of the active material particles in the circulation process, prevents the material from falling, and improves the electric performance of the sodium ion battery. The flexible current collector has excellent charging and discharging performance, and improved interface stability between solid electrolyte and pole piece. The MXene has rich functional groups and high specific surface area and special sheet structure, can effectively improve the interface stability between the solid electrolyte and the electrode sheet through strong interface effects, and efficiently bear the volume change of active material in the charging. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for manufacturing sodium ion solid battery.