NOVELTY - Manufacture of battery sintered compact involves preparing intermediate component containing glass (11) as solid electrolyte material (1) and active substance material (3), baking intermediate component, crystallizing glass, and obtaining crystallized glass. The ionic conductivity of crystallized glass is more when baking at temperature more than crystallization temperature of glass. The intermediate component produces heterogenous phase between solid electrolyte material and active substance material by baking at temperature more than crystallization temperature of glass.    USE - Manufacture of battery sintered compact used for all-solid-state lithium cell. Uses include but are not limited to personal computer, video camera, mobile telephone, communication apparatus, motor vehicle, electric vehicle, and hybrid vehicle.    ADVANTAGE - The method enables manufacture of battery sintered component having excellent ionic conductivity and reduced generation of heterogenous phase. The battery containing the sintered compact has excellent charging/discharging characteristics.    DETAILED DESCRIPTION - Manufacture of battery sintered compact involves preparing intermediate component containing a glass which is a raw material of the crystallized glass as a solid electrolyte material, and an active substance material, baking the prepared intermediate component, crystallizing the glass, and obtaining the crystallized glass. The baking process involves performing primary baking and secondary baking. The primary baking process involves heating the intermediate component to temperature (T1) more than the crystallization temperature of glass, and maintaining temperature (T1) or heating the intermediate component with the temperature increase rate lesser than the temperature increase rate of temperature (T1). The secondary baking process involves baking the primary baked intermediate component at a temperature (T2) more than temperature (T1). The ionic conductivity of the crystallized glass is more when baking at a temperature more than the crystallization temperature of the glass. The intermediate component produces a heterogenous phase between solid electrolyte material and the active substance material by baking at temperature higher than the crystallization temperature of the glass.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view explaining manufacture of battery sintered compact.    Solid electrolyte material (1)    Solid electrolyte layer (2)    Active substance material (3)    Active material layer (4)    Glass (11)