Integrated sintering forming method of solid electrolyte for alkali metal battery and product

The invention provides an integrated sintering forming method of a solid electrolyte for an alkali metal battery and a product, and belongs to the field of solid electrolytes.The integrated sintering forming method comprises the steps that a solid electrolyte green body for the alkali metal battery is prepared firstly, then a physical barrier layer is prefabricated on the surface of the green body, and finally the rapid-heating spark plasma sintering process is executed. The components of the physical barrier layer enable the physical barrier layer not to be melted in the spark plasma sintering process and react with active alkali metal in the green body, the corresponding active alkali metal in the green body can be fixed in the green body in the reaction process, an active layer containing the active alkali metal is generated, and the active layer is located on the surface of the sintered green body. The active layer can be used for reducing self interface internal resistance, and the active layer has seali