Lithium metal oxide electrodes for lithium cells and batteries

US6677082B2 · 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: Jun 21, 2001
• Grant date: Jan 13, 2004
• Expiry date: Oct 19, 2021

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-x)Li2M&#8242;O3 in which 0<x<1, and where M is one or more trivalent ion with at least one ion being Mn or Ni, and where M&#8242; is one or more tetravalent ion. Complete cells or batteries are disclosed with anode, cathode and electrolyte as are batteries of several cells connected in parallel or series or both.