Patent ID: 11962051
Assignee: SAKAI CHEMICAL INDUSTRY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 2:
3. A method for producing an electrolyte material for a solid oxide fuel cell comprising a perovskite oxide comprising at least one element A selected from the group consisting of Ba and Sr, an element Zr, at least one element M selected from the group consisting of Y and Yb, and oxygen, the method comprising:
when obtaining a precursor by grinding and mixing solid starting materials composed of basic zirconium carbonate as a starting material of the element Zr, and a first and a second solid starting material containing the element A and the element M, respectively, grinding and mixing the starting materials until the intensity of main diffraction line derived from the starting material of the element M of the resulting precursor is 3% or less of the intensity of main diffraction line derived from the starting material of the element A of the resulting precursor in the X-ray diffraction pattern, and the median value (D50) in the particle size distribution of the resulting precursor is 1 μm or less, and
firing and pulverizing the resulting precursor.