Dawson W Cagle

US Patent:

7531273, May 12, 2009

Filed:

Oct 22, 2004

Appl. No.:

10/970663

Inventors:

Michael James Wagner - Rockville MD, US
Robert Ellis Doe - Washington DC, US
Dawson W. Cagle - New York NY, US

Assignee:

ITT Manufacturing Enterprises, Inc. - Wilmington DE
The George Washington University - Washington DC

International Classification:

H01M 4/36
H01M 4/58

US Classification:

4292318, 429213, 252502, 977734, 977735

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.

US Patent:

20020182506, Dec 5, 2002

Filed:

May 29, 2001

Appl. No.:

09/866492

Inventors:

Dawson Cagle - Arlington VA, US

International Classification:

H01M004/58
H01M004/62
H01B001/04
C01B031/02

US Classification:

429/231800, 429/217000, 252/182100, 252/502000, 252/511000

Abstract:

This invention provides methods and materials for the manufacture of lithium ion rechargeable battery electrodes comprising fullerene compounds which have not been exposed to oxygen. Fullerene compounds are intercalated into carbonaceous materials to form electrodes having superior intercalation/deintercalation properties. Fullerene monomers, such as C, C, C, C, C, C, Cand Cand fluorinated derivatives thereof, are useful in the methods and materials of this invention. Materials incorporating Care particularly preferred. The invention also provides fullerene polymer materials useful for lithium ion electrodes with greatly improved electrochemical properties.

US Patent:

20040091783, May 13, 2004

Filed:

Nov 10, 2003

Appl. No.:

10/703527

Inventors:

Dawson Cagle - Arlington VA, US

International Classification:

H01M004/58
H01M004/62
H01B001/04

US Classification:

429/231800, 252/502000, 252/511000, 429/217000, 429/231700

Abstract:

This invention provides methods and materials for the manufacture of lithium ion rechargeable battery electrodes comprising fullerene compounds which have not been exposed to oxygen. Fullerene compounds are intercalated into carbonaceous materials to form electrodes having superior intercalation/deintercalation properties. Fullerene monomers, such as C, C, C, C, C, C, Cand Cand fluorinated derivatives thereof, are useful in the methods and materials of this invention. Materials incorporating Care particularly preferred. The invention also provides fullerene polymer materials useful for lithium ion electrodes with greatly improved electrochemical properties.