BINDER COMPOSITION FOR ELECTROCHEMICAL DEVICE, CONDUCTIVE MATERIAL DISPERSION LIQUID FOR ELECTROCHEMICAL DEVICE, SLURRY FOR ELECTROCHEMICAL DEVICE ELECTRODE, ELECTRODE FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE
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United States of America Patent
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Aug 1, 2024
app pub date -
Jun 21, 2022
filing date -
Jun 30, 2021
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Abstract
Provided is a binder composition that is capable of forming an electrode that can suppress an increase of internal resistance after cycling of an electrochemical device. The binder composition contains a polymer X, N-methyl-2-pyrrolidone, and a nitrogen compound other than N-methyl-2-pyrrolidone. The polymer X includes a nitrile group-containing monomer unit and includes either or both of an aliphatic conjugated diene monomer unit and an alkylene structural unit. The nitrogen compound has a molecular weight of 1,000 or less. An HSP distance (RA) between the nitrogen compound and the polymer X is 10.0 MPa1/2 or less.
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