Composite oxide powder, method for producing composite oxide powder, method for producing solid electrolyte object, and method for producing lithium ion secondary battery
AssigneesFuji Pigment Co., Ltd., Gs Alliance Co., Ltd.
InventorsHideki Yoshioka, Ryohei Mori
Life of this patent
Estimating the term…
Abstract
Provided are a composite oxide powder from which dense solid electrolyte objects having a high ion conductivity can be produced and a method for producing the composite oxide powder. The composite oxide powder is composed of particles comprising lithium (Li), lanthanum (La), zirconium (Zr), and oxygen (O) and having a cubic garnet-type crystal structure, and has a volume particle size distribution in which the 50% diameter (D50) is 1,000 nm or smaller, the composite oxide powder having a pyrochlore phase content of 10 mass % or less.
Claims15
A composite oxide powder comprising particles comprising lithium (Li), lanthanum (La), zirconium (Zr), and oxygen (O), and having a cubic garnet-type crystal structure,
- wherein the particles have a basic composition represented by the formula:
- Li7La3Zr2O12;
- the composite oxide powder having a 50% diameter (D50) in a volume particle size distribution of 1000 nm or less, and a content ratio of a pyrochlore phase of 10 mass % or less;
- and
- the composite oxide powder has a peak half width of a (211) diffraction line in an X-ray diffraction (XRD) profile of 0.50° or less.
Dependencies are inferred from the claim text.