Negative electrode for non-aqueous electrolyte secondary battery, producing method therefor, and non-aqueous electrolyte secondary battery
First Claim
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1. A negative electrode for a non-aqueous electrolyte secondary battery, comprising an active material including Si, a binder, and a conductive material, wherein said binder comprises polyimide and polyacrylic acid, and said conductive material comprises a carbon material.
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Abstract
A negative electrode for a non-aqueous electrolyte secondary battery in the present invention includes an active material including Si, a conductive material, and a binder. The binder is polyimide and polyacrylic acid, and the conductive material is a carbon material.
56 Citations
12 Claims
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1. A negative electrode for a non-aqueous electrolyte secondary battery, comprising an active material including Si, a binder, and a conductive material,
wherein said binder comprises polyimide and polyacrylic acid, and said conductive material comprises a carbon material.
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8. A method for producing a negative electrode for a non-aqueous electrolyte secondary battery, the method comprising the steps of:
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(1) mixing an active material including Si, a binder material solution including polyamic acid and polyacrylic acid, and a carbon material as a conductive material, and heating and drying the mixture to obtain a negative electrode mixture; and
(2) pressure-molding said negative electrode mixture to obtain a pellet, and heating said pellet to imidize said polyamic acid to obtain polyimide, thereby obtaining a negative electrode including polyimide and polyacrylic acid as a binder. - View Dependent Claims (9, 10, 11, 12)
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Specification