Lower pyrolysis temperature binder for silicon-dominant anodes
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United States of America Patent
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Feb 13, 2024
Grant Date -
Jun 15, 2023
app pub date -
Sep 15, 2022
filing date -
Nov 12, 2019
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Abstract
Systems and methods are provided for carbon additives for direct coating of silicon-dominant anodes. An example composition for use in directly coated anodes may include a silicon-dominated anode active material, a carbon-based binder, and a carbon-based additive, with the composition being configured for low-temperature pyrolysis. The low-temperature pyrolysis may be conducted at <600° C. An anode may be formed using a direct coating process of the composition on a current collector. The anode active material yields silicon constituting between 86% and 97% of weight of the formed anode after pyrolysis. The carbon-based additive yields carbon constituting between 2% and 6% of weight of the formed anode after pyrolysis.
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