Ceramic filler modified high-conductivity wide-voltage window composite electrolyte material, preparation method and application

The invention relates to a ceramic filler modified high-conductivity wide-voltage-window composite electrolyte material, a preparation method and application, and the preparation method comprises the following steps: respectively weighing a surface modified inorganic ceramic filler, a polymer matrix and a lithium salt, adding into an organic solvent, uniformly stirring, standing and defoaming to form electrolyte slurry, and drying to obtain the ceramic filler modified high-conductivity wide-voltage-window composite electrolyte material. And pouring the electrolyte slurry into a polytetrafluoroethylene mold, transferring the mold into a vacuum drying oven, and cooling to room temperature after drying to obtain the ceramic filler modified high-conductivity wide-voltage window composite electrolyte material. The composite electrolyte material has the characteristics of high ionic conductivity, wide voltage window and the like, the operation is easy, the raw material cost is low, the preparation process is simple