Amorphous ionically conductive metal oxides and sol gel method of preparation

US9356317B2 · kind B2 · utility

Assignee

• JOHNSON IP HOLDING, LLC. · US

Inventors

• Davorin Babic · Phoenix, US
• Lonnie G. Johnson · Mobile, US
• William Rauch · Marietta, US
• David K. Johnson · Plano, US
• Stanley Jones · Atlanta, US
• Lazbourne Alanzo Allie · McDonough, US
• Adrian M. GRANT · Auckland, NZ

Key dates

• Filing date: Oct 31, 2014
• Grant date: May 31, 2016
• Expiry date: Oct 31, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Amorphous lithium lanthanum zirconium oxide (LLZO) is formed as an ionically-conductive electrolyte medium. The LLZO comprises by percentage of total number of atoms from about 0.1% to about 50% lithium, from about 0.1% to about 25% lanthanum, from about 0.1% to about 25% zirconium, from about 30% to about 70% oxygen and from 0.0% to about 25% carbon. At least one layer of amorphous LLZO may be formed through a sol-gel process wherein quantities of lanthanum methoxyethoxide, lithium butoxide and zirconium butoxide are dissolved in an alcohol-based solvent to form a mixture which is dispensed into a substantially planar configuration, transitioned through a gel phase, dried and cured to a substantially dry phase.