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US 12,573,633 B2Granted
Binder for anode of secondary battery, anode of secondary battery and secondary battery
AssigneeLG Chem, Ltd.
InventorsJung Sup Han, Seon Hee Han, Jeong Man Son, Min Ah Kang, Sungjin Lee
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Abstract
This invention relates to a binder for an anode of a secondary battery, an anode of a secondary battery, and a secondary battery. Specifically, this invention provides a binder for an anode of a secondary battery that can not only improve anode adhesion, but also minimize resistance in a secondary battery, and ultimately, improve the life of a secondary battery.
Claims14
A binder for an anode of a secondary battery, comprising:
- a copolymer comprising, based on a total weight (100 wt %) of repeat units,
- a) 41 to 54 wt % of first repeat units derived from aliphatic conjugated diene-based first monomers,
- b) 41 to 54 wt % of second repeat units derived from aromatic vinyl-based second monomers,
- c) 1.5 to 2.3 wt % of third repeat units derived from unsaturated carboxylic acid-based third monomers, and
- d) 1 to 10 wt % of fourth repeat units derived from polyethylene glycol mono(meth)acrylate,
- wherein a weight ratio of the first repeat units to the fourth repeat units (first repeat units/fourth repeat units) is 4.4 to 48.5, and
- wherein a weight ratio of the second repeat units to the fourth repeat units (second repeat units/fourth repeat units) is 4.4 to 48.5.
4 more elements
Dependencies are inferred from the claim text.