Kerr-mcgee Chemical, LLC

Other

Tronox LLC

Stephen Wilfred Sheargold

Wilmont Frederick Howard, Jr

Terrell N Andersen

Robert L Peterson

Anthony Michael Thurston

Phillip M Story

Felix Mbanga Towa

Monte Sean Jordan

Joe Lane Bledsoe

Intercalation cathode materials especially suited for use in high-voltage, high-energy lithium rechargeable batteries, having the formulae Li[Li()/MMn()/Ni()O, where 0&#x3c;x&#x3c;0.5, 0&#x3c;y&#x2266;0.25, x&#x3e;y, and M is one or more divalent cations from Ca, Cu, Mg, and Zn. A process for making such materials is also provided.

High voltage laminar cathode materials for lithium rechargeable batteries, and process for making the same

Improved stabilized spinel battery cathode material and methods of treating particles of spinel battery cathode material to produce a protective coating of battery-inactive lithium metal oxide on the particles are provided. The methods basically comprise mixing the spinel particles with a particulate reactant selected from a lithium salt, a lithium metal oxide or a mixture of a lithium salt and a metal oxide and then heating the resultant particulate mixture for a time and temperature to react the particulate reactant with the spinel particles whereby a protective coating of lithium metal oxide is formed on the spinel particles and the lithium content of the spinel adjacent to the coating is increased a limited amount.

Stabilized spinel battery cathode material and methods

Intercalation compositions having spinel structures with crystallites of metal oxides (M,O,) dispersed throughout the structure are provided having the general formula Li,M,Mn,O,. Methods of producing the intercalation compositions and rechargeable lithium batteries containing the compositions are also provided.

Cathode intercalation compositions, production methods and rechargeable lithium batteries containing the same

A continuous method of preparing a single phase lithiated manganese oxide intercalation compound of the formula Li.sub.1+x Mn.sub.2-x O.sub.4 comprising the steps of: mixing intimately a lithium hydroxide or a lithium salt and a manganese oxide or a manganese salt; feeding the intimately mixed salts to a reactor; continuously agitating the mixed salts in the reactor; heating the agitated mixed salts in the reactor at a temperature of from about 650 .degree. C. to about 800.degree. C. for a time not in excess of about 4 hours in an oxygen-containing atmosphere; and cooling the reacted product to less than about 200.degree. C. in an oxygen-containing atmosphere for a time not in excess of about 2 hours.

Method of preparing Li.sub.1+x MN.sub.2-x O.sub.4 for use as secondary

A continuous method of preparing a single phase lithiated manganese oxide intercalation compound of the formula Li.sub.1+x Mn.sub.2-x O.sub.4 comprising the steps of: mixing intimately a lithium hydroxide or a lithium salt and a manganese oxide or a manganese salt; feeding the intimately mixed salts to a reactor; continuously agitating the mixed salts in the reactor; heating the agitated mixed salts in the reactor at a temperature of from about 650.degree. C. to about 800.degree. C. for a time not in excess of about 4 hours in an oxygen-containing atmosphere; and cooling the reacted product to less than about 200.degree. C. in an oxygen-containing atmosphere for a time not in excess of about 2 hours.

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Edmond, OK, United States of America

Stephen Wilfred Sheargold