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:
Aug. 15, 2023
Filed:
Nov. 24, 2015
Applicant:
Celgard, Llc, Charlotte, NC (US);
Inventors:
Xiaomin Zhang, Charlotte, NC (US);
Kang Karen Xiao, Mississauga, CA;
Robert A. Nark, Charlotte, NC (US);
Ron E. Smith, Huntersville, NC (US);
Assignee:
Celgard, LLC, Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/05 (2010.01); H01M 50/449 (2021.01); H01M 50/414 (2021.01); H01M 50/406 (2021.01); H01M 50/489 (2021.01); H01M 50/494 (2021.01); H01M 50/491 (2021.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 50/449 (2021.01); H01M 50/406 (2021.01); H01M 50/414 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 50/494 (2021.01); H01M 10/052 (2013.01);
Abstract
Several embodiments of a microporous battery separator for lithium rechargeable batteries and/or related methods of making and/or using such separators are disclosed. A dry process battery separator or membrane separator exhibits a thickness that is less than about 14 μm and has increased strength performance as defined by reduced splittiness. The mode of splitting failure has been investigated, and the improvement in splittiness quantified by a test method known as the Composite Splittiness Index (CSI).