Solid-state electrolyte battery based on non-uniformly coated solid-state electrolyte layer and preparation method of solid-state electrolyte battery

The invention discloses a solid-state electrolyte battery based on a non-uniformly coated solid-state electrolyte layer and a preparation method of the solid-state electrolyte battery, and belongs to the technical field of lithium ion batteries, the solid-state electrolyte battery is composed of a positive pole piece, a double-layer solid-state electrolyte layer and a negative pole piece from bottom to top in sequence, the double-layer solid electrolyte layer consists of a solid electrolyte layer of a positive electrode and a solid electrolyte layer of a negative electrode from bottom to top; the solid-state electrolyte layer of the positive electrode and the solid-state electrolyte layer of the negative electrode are both of a structure with thin middle and two thick sides, the thicknesses of the two sides are symmetrically distributed, and the edges are gradually thickened from the center to the two sides. The electrolyte layer is a non-uniformly coated electrolyte layer, and fills gaps of the thinned areas