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:
Apr. 26, 2022
Filed:
Sep. 17, 2019
GM Global Technology Operations Llc, Detroit, MI (US);
Meng Jiang, Rochester Hills, MI (US);
Raghunathan K, Troy, MI (US);
Ion C. Halalay, Grosse Pointe Park, MI (US);
Mark W. Verbrugge, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Methods for fabricating electrodes include coating a current collector with a slurry to form a coated current collector. The slurry includes a dry fraction, including silicon particles, polymeric binders, and one or more types of naturally occurring carbonaceous filaments, and one or more solvents. The coated current collector is heat treated to produce the electrode having a layer of silicon-based host material. The one or more naturally occurring carbonaceous filaments can include animal fibers, chitin, alginate, cellulose, keratin, and chitosan, and can have an average length of 1 μm to 50 μm and an average diameter of 1 nm to 500 nm. The dry fraction can include 5 wt. % to 95 wt. % silicon particles, 0.1 wt. % to 15 wt. % polymeric binders, and 1 wt. % to 20 wt. % naturally occurring carbonaceous filaments. The method can include assembling a battery cell by disposing the electrode and a positive electrode in electrolyte.