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:
Nov. 13, 2018
Filed:
Feb. 09, 2015
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Qiangfeng Xiao, Troy, MI (US);
Anne M. Dailly, West Bloomfield, MI (US);
Li Yang, Troy, MI (US);
Zhongyi Liu, Troy, MI (US);
Mei Cai, Bloomfield Hills, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); H01M 10/052 (2010.01); H01M 2/14 (2006.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); H01M 2/145 (2013.01); H01M 2/1653 (2013.01); H01M 10/052 (2013.01);
Abstract
A lithium-based battery separator includes a porous polymer membrane having opposed surfaces. A porous carbon coating is formed on one of the opposed surfaces of the porous polymer membrane. Polycations are incorporated in the porous carbon coating, in the porous polymer membrane, or in both the porous carbon coating and the porous polymer membrane.