Cathode materials for secondary (rechargeable) lithium batteries

Patent 5910382 Issued on June 8, 1999. Estimated Expiration Date:

April 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Alkali metal or alkaline earth metal compound additive for manganese dioxide-containing nonaqueous cells
Patent #: 4465747
Issued on: 08/14/1984
Inventor: Evans

Rhombohedral nasicon compound and battery
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Inventors

Assignee

Board of Regents, University of Texas System

Application

No. 840523 filed on 04/21/1997

US Classes:

429/218.1, Chemically specified inorganic electrochemically active material containing429/221, Iron component is active material429/224Manganese component is active material

Examiners

Primary: Nuzzolillo, Maria
Assistant: Chaney, Carol

Attorney, Agent or Firm

Arnold White & Durkee

Foreign Patent References

WO 98/12761 WO. 03/13/1998

International Class

H01M 004/58

Abstract

The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3- as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.

Other References

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