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. 04, 2021
Filed:
Oct. 15, 2018
Applicant:
Optodot Corporation, Devens, MA (US);
Inventors:
David W. Avison, Boxborough, MA (US);
Steven A. Carlson, Cambridge, MA (US);
Benjamin Sloan, Exeter, NH (US);
Assignee:
Optodot Corporation, Devens, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 2/16 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); H01M 2/166 (2013.01); H01M 2/1653 (2013.01); H01M 10/0525 (2013.01);
Abstract
A separator for a lithium battery having (a) a porous polymeric layer, such as a polyethylene layer; and (b) a nanoporous inorganic particle/polymer layer on both sides of the polymeric layer, the nanoporous layer having an inorganic oxide and one or more polymers; the volume fraction of the polymers in the nanoporous layer is about 15% to about 50%, and the crystallite size of the inorganic oxide is 5 nm to 90 nm.