Methods for fabricating silicon-based electrodes comprising naturally occurring carbonaceous filaments and battery cells utilizing the same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11316142
APP PUB NO 20210083264A1
SERIAL NO

16572789

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Abstract

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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.

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Patent Owner(s)

  • GM GLOBAL TECHNOLOGY OPERATIONS LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Halalay, Ion C Grosse Pointe Park, US 61 811
Jiang, Meng Rochester Hills, US 38 298
K, Raghunathan Troy, US 27 82
Verbrugge, Mark W Troy, US 166 3103

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