SOLID-STATE ELECTROLYTE MATERIAL AND PREPARATION METHOD THEREOF, CATHODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF, CATHODE PLATE, BATTERY, AND ELECTRICAL DEVICE

The present disclosure provides a solid-state electrolyte material and a preparation method thereof, a cathode active material and a preparation method thereof, a cathode plate, a battery, and an electrical device, which are related to the field of battery technologies. The solid-state electrolyte material has a NASICON crystal structure. In an X-ray diffraction pattern of the solid-state electrolyte material, a 2θ value of a diffraction peak representing LiTi(PO)is decreased by 0.02° to 0.06° compared with a 2θ value of a corresponding diffraction peak in a standard pattern of LiTi(PO). Thus, use of the solid-state electrolyte material enables a battery loaded with the solid-state electrolyte material to have excellent rate performance.