Solvents and slurries comprising a poly(carboxylic acid) binder for silicon electrode manufacture

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United States of America Patent

PATENT NO 12015156
APP PUB NO 20230087760A1
SERIAL NO

17987605

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Abstract

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An silicon-containing electrode is formed by coating a silicon-containing slurry onto a conductive current collector. The slurry comprises a binder solution comprising a poly(carboxylic acid) binder dissolved in a mixed solvent system comprising an amide solvent of Formula I, as described herein, and a second solvent which can be water and/or an organic solvent. The binder preferably comprises poly(acrylic acid). The mixed solvent system comprises about 10 to about 99 vol % of the amide solvent of Formula I. The binder solution is utilized as a solvent for a slurry of silicon-containing particles for preparing the silicon-containing electrode. The slurries comprising the mixed solvent system have higher viscosity and are more stable than slurries containing the same concentrations of silicon particles, carbon particles, and binder in water as the sole solvent.

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Patent Owner(s)

Patent OwnerAddress
UCHICAGO ARGONNE LLC5801 SOUTH ELLIS AVENUE CHICAGO IL 60637

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jansen, Andrew Bolingbrook, US 5 57
Shi, Zhangxing Westmont, US 6 2
Trask, Stephen Batavia, US 2 2
Zhang, Lu Lisle, US 400 2978

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