| 摘要 |
There is provided a method for producing a beta-alumina solid electrolyte without calcination of starting materials, according to which the step of synthesizing a magnesium-aluminum spinel starting material is not needed and a beta-alumina solid electrolyte of low resistance can be produced at lower cost. According to this method, the beta-alumina solid electrolyte is produced without carrying out calcination of the starting materials by granulating a slurry obtained by milling and mixing starting materials of an aluminum source, a magnesium source and a sodium source in water, molding the granulated product and then firing the molded product. In this method, magnesium hydroxide is used as the magnesium source and an active spinel high in reactivity is synthesized in the course of firing, and citric acid is added to the slurry as a dispersing agent. |
