Patent ID: 11973184
Assignee: OSAKA UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 0:
1. A method for producing a garnet-type composite metal oxide, the method comprising:
mechanochemically treating a mixture comprising raw material powders and at least one flux to react the raw material powders,
wherein the raw material powders comprise a Li source powder, a La source powder and a Zr source powder,
wherein the garnet-type composite metal oxide comprises Li, La, Zr and O,
wherein the at least one flux comprises at least one selected from the group consisting of a metal halide, PbO, B2O3, Al(OH)3, Ga(OH)3, KOH, Sr(OH)2, NaOH, Ba(OH)2, and Mg(OH)2,
wherein during the mechanochemically treating of the mixture, strain energy is accumulated in the raw material powders and released as heat energy,
wherein the mechanochemically treating is conducted by shearing the mixture comprising the raw material powders and the at least one flux in a bottomed cylindrical vessel equipped with a rotor having an end blade,
wherein a curvature of the end blade is smaller than a curvature of an inner circumference of the bottomed cylindrical vessel such that there is a predetermined clearance between the end blade and the inner circumference of the bottomed cylindrical vessel,
wherein the mixture comprising the raw material powders and the at least one flux is sheared while being compressed in the clearance by the rotor rotating, and
wherein the clearance is 100 um or more and 0.9 mm or less.