The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
Oct. 22, 2004
Michael James Wagner, Rockville, MD (US);
Louis Joseph Rendek, Jr., West Melbourne, FL (US);
Robert Ellis Doe, Washington, DC (US);
Dawson W. Cagle, New York, NY (US);
Michael James Wagner, Rockville, MD (US);
Louis Joseph Rendek, Jr., West Melbourne, FL (US);
Robert Ellis Doe, Washington, DC (US);
Dawson W. Cagle, New York, NY (US);
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
The George Washington University, Washington, DC (US);
Abstract
A composition for forming an electrode for a lithium ion secondary battery includes a carbonaceous material combined with a fullerene material including fullerene species having a carbon content of C, where n≧100. The composition is heated to a temperature of 100° C. or greater to facilitate reaction and/or diffusion of the fullerene material with the carbonaceous material, and also to remove lower molecular weight (C) fullerenes from the composition. In addition, other extraction techniques may be utilized in combination with heat treatment to selectively remove fullerene species from the fullerene material. The composition enhances the electrochemical performance of the electrode in the lithium ion battery.