Binder composition for positive electrode of lithium ion secondary battery, slurry composition for positive electrode of lithium ion secondary battery and method of producing the same, method of producing positive electrode for lithium ion secondary battery, and lithium ion secondary battery
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United States of America Patent
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Jan 23, 2018
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May 14, 2014
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May 15, 2013
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Abstract
The disclosed binder composition for the positive electrode of a lithium ion secondary battery includes a binder and an organic dispersion medium, a weight-average molecular weight of the binder being from 100,000 to 2,000,000, and the binder containing 10% to 35% by mass of an ethylenically unsaturated monomer unit containing an acid group, and includes 0.6 to 1.5 equivalents of lithium with respect to the acid group. The disclosed slurry composition for the positive electrode of a lithium ion secondary battery includes this binder composition, a positive electrode active material, and a conductive material.
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