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The United States of America As Represented by the United States

Sandia Corporation

Narayan Doddapaneni

David Ingersoll

Frank M Delnick

Robert Ward Crocker

Ronald F Simandl

Alan P Sylwester

David W Firsich

D Gerald Glasgow

James C Wang

Robert R Lagasse

A method of producing carbon materials for use as electrodes in rechargeable batteries. Electrodes prepared from these carbon materials exhibit intercalation efficiencies of .apprxeq.80% for lithium, low irreversible loss of lithium, long cycle life, are capable of sustaining a high rates of discharge and are cheap and easy to manufacture. The method comprises a novel two-step stabilization process in which polymeric precursor materials are stabilized by first heating in an inert atmosphere and subsequently heating in air. During the stabilization process, the polymeric precursor material can be agitated to reduce particle fusion and promote mass transfer of oxygen and water vapor. The stabilized, polymeric precursor materials can then be converted to a synthetic carbon, suitable for fabricating electrodes for use in rechargeable batteries, by heating to a high temperature in a flowing inert atmosphere.

Method of preparation of carbon materials for use as electrodes in

A method of making chemically and electrochemically stable oxides or other chalcogenides for use as cathodes for power source applications, and of making batteries comprising such materials.

Method of producing stable metal oxides and chalcogenides and power

A secondary battery having a rechargeable lithium-containing anode, a cathode, and a separator positioned between the cathode and anode with an organic electrolyte solution absorbed therein is provided. The anode comprises three-dimensional microporous carbon structures synthesized by the controlled pyrolysis of gel derived polymer foam precursors. The gradual heating process in the carbonization of pretreated foam precursors stabilizes the pore structures in the pretreated foam.

Structural micro-porous carbon anode for rechargeable lithium ion

Electrolyte salts for power sources comprising salts of phenyl polysulfonic acids and phenyl polyphosphonic acids. The preferred salts are alkali and alkaline earth metal salts, most preferably lithium salts.

Electrolyte salts for power sources

Electrolytes for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids.

Growing community of inventors

Albuquerque, NM, United States of America

Narayan Doddapaneni