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:
Jun. 26, 2018
Filed:
Jun. 19, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
Bar-ilan University, Ramat Gan, IL;
Shalom Luski, Rehovot, IL;
Doron Aurbach, Bnei Brak, IL;
Ion C. Halalay, Grosse Pointe Park, MI (US);
Timothy J. Fuller, Pittsford, NY (US);
Bob R. Powell, Jr., Birmingham, MI (US);
Anjan Banerjee, West Bengal State, IN;
Baruch Ziv, Ramat-Gan, IL;
Yuliya Shilina, Bat Yam, IL;
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
BAR-ILAN UNIVERSITY, Ramat Gan, IL;
Abstract
A lithium ion battery includes positive and negative electrodes, and a nanoporous or microporous polymer separator soaked in an electrolyte solution, between the positive electrode and the negative electrode. Chelating agent(s) are included to complex with transition metal ions while not affecting movement of lithium ions across the separator during operation of the lithium ion battery. The chelating agents are: dissolved in the electrolyte solution; grafted onto the polymer of the separator; attached to the binder material of the negative and/or positive electrode; coated on a surface of the separator; and/or coated on a surface of the negative and/or positive electrode. The chelating agents are selected from: ion traps in molecular form selected from polyamines, thiols and alkali metal salts of organic acids; polymers functionalized with alkali metal salts of organic acids; polymers functionalized with nitrogen-containing functional groups; and polymers functionalized with two or more functional groups.