Oxide electrolyte sintered body and method for producing the same
US10727483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2017 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Aug 22, 2037 |
Classification
- Technology area (CPC —)General
Abstract
An oxide electrolyte sintered body with high lithium ion conductivity and a method for producing the same, which can obtain the oxide electrolyte sintered body with high lithium ion conductivity by sintering at lower temperature than ever before. The method for producing an oxide electrolyte sintered body may comprise the steps of: preparing crystal particles of a garnet-type ion-conducting oxide which comprises Li, H, at least one kind of element L selected from the group consisting of an alkaline-earth metal and a lanthanoid element, and at least one kind of element M selected from the group consisting of a transition element that can be 6-coordinated with oxygen and typical elements belonging to the Groups 12 to 15, and which is represented by a general formula (Lix−3y−z,Ey,Hz)LαMβOγ (where E is at least one kind of element selected from the group consisting of Al, Ga, Fe and Si, 3≤x−3y−z≤7, 0≤y<0.22, 0<z≤2.8, 2.5≤α≤3.5, 1.5≤β≤2.5, and 11≤γ≤13); preparing a lithium-containing flux; and sintering a mixture of the crystal particles of the garnet-type ion-conducting oxide and the flux by heating at 400° C. or more and 650° C. or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.