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:
Feb. 03, 2015
Filed:
Jun. 07, 2011
Applicants:
Fazlil Coowar, Southampton, GB;
Mamdouh Elsayed Abdelsalam, Southampton, GB;
Michael Jonathan Lain, Abingdon, GB;
Inventors:
Fazlil Coowar, Southampton, GB;
Mamdouh Elsayed Abdelsalam, Southampton, GB;
Michael Jonathan Lain, Abingdon, GB;
Assignee:
Nexeon Ltd., Oxfordshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/62 (2006.01); H01M 6/16 (2006.01); H01M 10/056 (2010.01); H01M 4/134 (2010.01); H01M 10/0525 (2010.01); H01M 10/0566 (2010.01); H01M 10/0567 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H02J 7/00 (2006.01); H01M 10/44 (2006.01);
U.S. Cl.
CPC ...
H01M 10/056 (2013.01); H01M 4/134 (2013.01); H01M 10/0525 (2013.01); H01M 10/0566 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H02J 7/0052 (2013.01); H01M 10/44 (2013.01); Y02E 60/122 (2013.01);
Abstract
The present invention claims the addition of vinylene carbonate (VC) and optionally also fluoroethylene carbonate to the electrolyte of lithium ion cells having a structural silicon composite anode, i.e. an anode containing fibers or particles of silicon. The additive significantly improves the cycling performance of the cells. A VC content in the range 3.5-8 wt % based on the weight of the electrolyte has been found to be optimum.