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US 10,763,508 B2Granted
Binder for secondary battery comprising a magnetic material
AssigneeLG Chem, Ltd.
InventorsJooyong Song, Ji Hee Ahn, Ji Eun Lee
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Abstract
The present invention provides a binder for secondary battery contained in an electrode mixture, comprising a binder molecule exhibiting an adhesion to a current collector and active material particles, and a magnetic material displaying magnetism for a magnetic field applied from outside.
Claims5
A binder for secondary battery contained in the electrode mixture, the binder comprising:
- a binder molecule exhibiting an adhesion to a current collector and active material particles;
- and
- a magnetic material displaying magnetism for a magnetic field applied from outside,
- wherein the magnetic material is a cationic metal,
- wherein the metal is at least one selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, Zn, Zr, Nb, Mo, Sr, Sb, W and Ti,
- wherein the magnetic material is chemically bonded to the binder molecule,
- wherein the binder molecule and the magnetic material forms a chelate bond, and
- wherein the binder molecule is at least one selected from the group consisting of polyvinylidene fluoride, polyvinyl alcohol, carboxymethylcellulose (CMC), starch, hydroxypropylcellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butylene rubber, and fluorine rubber, or a copolymer thereof.
5 more elements
Dependencies are inferred from the claim text.