Lithium metal oxide electrodes for lithium cells and batteries

US6680143B2 · kind B2 · utility

Assignee

• THE UNIVERSITY OF CHICAGO · US

Inventors

• Michael M. Thackeray · Pretoria, ZA
• Christopher S. Johnson · Naperville, US
• Khalil Amine · Oak Brook, US
• Jaekook Kim · Austin, US

Key dates

• Filing date: Nov 21, 2001
• Grant date: Jan 20, 2004
• Expiry date: Apr 4, 2022

Classification

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

Abstract

A lithium metal oxide positive electrode for a non-aqueous lithium cell is disclosed. The cell is prepared in its initial discharged state and has a general formula xLiMO2.(1&#8722;x)Li2M&#8242;O3 in which 0<x<1, and where M is one or more ion with an average trivalent oxidation state and with at least one ion being Mn or Ni, and where M&#8242; is one or more ion with an average tetravalent oxidation state. Complete cells or batteries are disclosed with anode, cathode and electrolyte as are batteries of several cells connected in parallel or series or both.