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US 11,342,581 B2Granted
Ceramic powder material, method for producing ceramic powder material, and battery
AssigneeDaiichi Kigenso Kagaku Kogyo Co., Ltd.
InventorTadahiro Niwa
Life of this patent
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Abstract
A ceramic powder material which contains an LLZ-based garnet-type compound represented by Li7−3xAlxLa3Zr2O12 (where x satisfies 0≤x≤0.3) and in which a main phase of a crystal phase undergoes phase transition from a tetragonal phase to a cubic phase in the process of raising a temperature from 25° C. to 1050° C. and the main phase is the cubic phase even after the temperature is lowered to 25° C.
Claims9
A ceramic powder material comprising an LLZ-based garnet-type compound represented by Li7−3x AlxLa3Zr2O12(where x satisfies 0≤x≤0.3), wherein
- a main phase of a crystal phase undergoes phase transition from a tetragonal phase to a cubic phase in process of raising a temperature from 25° C. to 1050° C. and the main phase is the cubic phase even after the temperature is lowered to 25° C.,
- wherein the ceramic powder material includes aluminum such that the ceramic powder material satisfies the following features:
- a number of La atoms with respect to two Zr atoms is more than 3 and 4 or less, and
- [X−(Y−3)] is 0.14 or more and 0.25 or less, where X is a number of Al atoms with respect to two Zr atoms and Y is a number of La atoms with respect to two Zr atoms.
1 more element
Dependencies are inferred from the claim text.