Lithium composite oxide single crystal, lithium composite oxide polycrystal, lithium composite oxide material, solid electrolyte material, all- solid-state lithium-ion secondary battery, and method for producing solid electrolyte material
AssigneeNational Institute of Advanced Industrial Science and Technology
InventorsKunimitsu Kataoka, Junji Akimoto
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Abstract
The lithium composite oxide single crystal has a chemical composition represented by Li7-3x-w-vGaxLa3Zr2-w-vTaWNbvO12 (0.02≤x<0.5, 0≤W≤1.0, 0≤V≤1.0, and 0.05≤W+V≤1.0), which belongs to a space group I-43d in a cubic system and has a garnet structure.
Claims20
A lithium composite oxide single crystal having a chemical composition represented by Li7-3x-w-vGaxLa3Zr2-w-vTaWNbvO12 (0.02≤x<0.5, 0≤W≤1.0, 0≤V≤1.0, and 0.05≤W+V≤1.0), which belongs to a space group I-43d in a cubic system and has a garnet structure.
A lithium composite oxide polycrystal comprising:
- a single crystal having a chemical composition represented by Li7-3x-w-vGaxLa3Zr2-w-vTaWNbvO12 (0.02≤x<0.5, 0≤W≤1.0, 0≤V≤1.0, and 0.05≤W+V≤1.0), which belongs to a space group I-43d in a cubic system and has a garnet structure.
A method for producing a solid electrolyte material, comprising:
- a first step of melting a material having a chemical composition represented by Li(7-3x-W)yGaxzLa3Zr2-WTaWNbvO12 (0.02≤x<0.5, 1.1≤y≤1.4, 1.6≤z≤3.3, 0≤W≤1.0, 0≤V≤1.0, 0.05≤W+V≤1.0, 1.1≤y≤1.5, and 1.5≤z≤3.5), and
- producing the solid electrolyte material from the melted material.
Dependencies are inferred from the claim text.