Mineral-based all-solid-state electrolyte as well as preparation method and application thereof

The embodiment of the invention relates to a mineral-based all-solid-state electrolyte as well as a preparation method and application thereof, and belongs to the technical field of preparation of an aqueous zinc ion battery electrolyte. The preparation method of the mineral-based all-solid-state electrolyte provided by the embodiment of the invention comprises the following steps: mixing mullite powder with a zinc salt electrolyte, carrying out ultrasonic and stirring treatment, and carrying out centrifugal washing and drying to obtain the mineral-based all-solid-state electrolyte. The mineral-based all-solid-state electrolyte provided by the embodiment of the invention not only can avoid side reaction caused by active water, but also can inhibit shuttling of the negative iodine positive electrode and the polyiodide, avoids corrosion of attenuation of battery capacity and shuttling of the polyiodide to the zinc negative electrode, and has a very good application prospect in the aqueous zinc ion battery. 本申请实