MANUFACTURING METHOD OF SECONDARY BATTERY

To provide a manufacturing method of a secondary battery capable of reducing a change in a crystal structure of a hydride.SOLUTION: A secondary battery includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer in this order, and at least one of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer contains a hydride having ionic conductivity. A manufacturing method of the secondary battery includes the steps of preparing a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, and heating a layer containing a hydride from among the positive electrode layer, the solid electrolyte layer, and the negative electrode layer to a temperature of 100°C or higher and 300°C or lower.SELECTED DRAWING: Figure 1 【課題】水素化物の結晶構造の変化を低減できる二次電池の製造方法を提供する。【解決手段】二次電池は、順に正極層、固体電解質層および負極層を含み、正極層、固体電解質層および負極層の少なくとも１つは、イオン伝導性を有する水素化物を含む。二次電池の製造方法は、正極層、固体電解質層および負極層を準備する工程と、正極層、固体電解質層および負極層のうち水素化物を含む層を、１００℃以上３００℃以下の温度に加熱する工程と、を備える。【選択図】図１