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US 12,614,730 B2Granted
Aqueous binder composition for an electrode and methods for producing the same
AssigneeHercules Incorporated
InventorsAlan Edward Goliaszweski, Shufu Peng
Life of this patent
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Abstract
An aqueous binder composition comprising a cationic copolymer derived from at least one cationic monomer and at least one nonionic monomer is disclosed. Additionally, the present disclosure relates generally to electrode compositions and methods of making electrodes, especially anodes, with the binder composition.
Claims17
An aqueous binder composition for an electrode of a lithium ion battery comprising:
- a cationic copolymer derived from at least one cationic monomer selected from the group consisting of acrylamidopropyltrimethylammonium chloride (APTAC), methacrylamidopropyltrimethylammonium chloride (MAPTAC), acryloyloxyethyltrimethylammonium chloride (AETAC), methacryloyloxyethyltrimethylammonium chloride (MAETAC), N-[2-(acryloyloxy)ethyl]-N-benzyldimethylammonium chloride, acryloyloxyethyltrimethylammonium chloride, and 3-(methacryloylamino) propyl-lauryl-dimethylammonium chloride (MAPLDMAC);
- at least one nonionic monomer selected from the group consisting of acrylamide (AM), dimethylacrylamide, diethylacrylamide, hydroxyethyl acrylamide, dimethylaminopropyl acrylamide, dimethylaminopropyl methacrylamide, vinyl acetate (VA), vinylformamide, acrylonitrile (AN), acrylate, ethylhexyl acrylate, carboxyethyl acrylate, dimethylaminoethyl methacrylate, and diethylaminoethyl methacrylate;
- and an anionic polymer selected from the group consisting of a guar derivative, poly(acrylamide-2-methylpropane sulfonic acid, a copolymer derived from acrylamide-2-methylpropane sulfonic acid with acrylic acid or acrylate, carrageenan, and a tetrapolymer derived from acrylamidomethylpropyl sulfonate (AMPS), acrylic acid, acrylamide and 3-allyloxy-2-hydroxypropyl sulfonic acid.
Dependencies are inferred from the claim text.