SECONDARY-BATTERY BINDER COMPOSITION, SLURRY COMPOSITION FOR SECONDARY-BATTERY ELECTRODE, SECONDARY-BATTERY NEGATIVE ELECTRODE, AND SECONDARY BATTERY
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United States of America Patent
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Issued Date -
Jul 14, 2016
app pub date -
May 22, 2014
filing date -
May 23, 2013
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Abstract
Provided is a secondary-battery binder composition that demonstrates superior binding capacity and can improve the electrical characteristics of secondary batteries when used to form the battery members. The disclosed binder composition contains a water-soluble thickener (A) having a hydroxy group or a carboxyl group; a cross-linking agent (B) having a carbodiimide group or an oxazoline group; and a particulate polymer (C). The particulate polymer (C) has a functional group reactive with the cross-linking agent (B), and contains an aliphatic conjugated diene monomer unit and an aromatic vinyl monomer unit. The binder composition contains 0.001 mass parts or more but less than 100 mass parts of the cross-linking agent (B) and 10 mass parts or more but less than 500 mass parts of the particulate polymer (C) per 100 mass parts of the water-soluble thickener (A).
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