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. 09, 2021
Filed:
Jun. 19, 2019
GM Global Technology Operations Llc, Detroit, MI (US);
Mei Cai, Bloomfield Hills, MI (US);
Fang Dai, Troy, MI (US);
Shuru Chen, Troy, MI (US);
Biqiong Wang, Madison Heights, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Composite cathode-separator laminations (CSL) include a current collector with sulfur-based host material applied thereto, a coated separator comprising an electrolyte membrane separator with a carbonaceous coating, and a porous, polymer-based interfacial layer (PBIL) forming a binding interface between the carbonaceous coating and the host material. The host material includes less than about 6% polymeric binder, and less than about 40% electrically conductive carbon, with the balance comprising one or more sulfur compounds. The PBIL can have a thickness of less than about 5 μm and a porosity of about 5% to about 40%. The host material can comprise less than about 40% conductive carbon (e.g., graphene) and have a porosity of less than about 40%. The carbonaceous coating (e.g., graphene) can have a thickness of about 1 μm to about 5 μm. The CSL can be disposed with an anode within an electrolyte to form a lithium-sulfur battery cell.