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:
Apr. 21, 2015
Filed:
Jul. 14, 2009
Applicant:
Sujeet Kumar, Newark, CA (US);
Inventor:
Sujeet Kumar, Newark, CA (US);
Assignee:
Envia Systems, Inc., Newark, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 4/38 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 4/38 (2013.01); Y02E 60/122 (2013.01);
Abstract
Compositions are described that can provide high energy density active materials for use in negative electrodes of lithium ion batteries. These materials generally comprise silicon and/or tin, and may further comprise carbon and/or zinc as well as other elements in appropriate embodiments. The active materials can have moderate volume changes upon cycling in a lithium ion battery.