Secondary Battery and Method for Manufacturing Same
AssigneeSK Innovation Co., Ltd.
InventorsYongseok Lee, Junghwan Kim, Sangwon Bae, Jihee Bae, Myungro Lee
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Abstract
A method for manufacturing a secondary battery according to the present invention includes the steps of: a) adding a point-type conductive carbon material to a negative electrode active material slurry and mixing the materials to prepare a first mixed slurry; b) adding a linear conductive carbon material to the first mixed slurry and mixing the materials to prepare a second mixed slurry; and c) coating a current collector with the second mixed slurry and performing rolling to manufacture an electrode.
Claims17
A method for manufacturing a secondary battery, the method comprising the steps of:
- a) adding a point type conductive carbon material to a negative electrode active material slurry and mixing the materials to prepare a first mixed slurry;
- b) adding a dispersion of a linear conductive carbon material to the first mixed slurry and mixing the materials to prepare a second mixed slurry;
- and
- c) coating a current collector with the second mixed slurry and performing rolling to manufacture an electrode.
A secondary battery comprising an electrode in which an active material layer comprising a negative electrode active material having an average diameter (D50) of 5 to 20 μm, a point type conductive carbon material, a linear conductive carbon material, and a binder is disposed on at least one surface of a current collector, the negative electrode active material being in a state of being sequentially coated with the point type conductive carbon material and the linear conductive carbon material.
Dependencies are inferred from the claim text.