Samsung Sdi Co., Inc.

Minah Cha

Wooyoung Yang

Pilsang Yun

Donggyu Chang

Hyunbeom Kim

Jangsuk Hyun

Jiyoon Kim

Hyundeok Lee

Provided are a nickel-based active material precursor for a lithium secondary battery including: a first porous core; a second core located on the first porous core and having a higher density than that of the first porous core, a shell located on the second core; and having a radial arrangement structure, wherein an amount of nickel included in the first porous core is greater than or equal to an amount of nickel included in the second core, and the amount of nickel included in the second core is greater than an amount of nickel included in the shell, a method of producing the nickel-based active precursor, a nickel-based active material for a lithium secondary battery, obtained from the nickel-based active precursor, and a lithium secondary battery including a cathode containing the nickel-based active material.

Nickel active material precursor for lithium secondary battery, method for producing nickel active material precursor, nickel active material for lithium secondary battery produced by method, and lithium secondary battery having cathode containing nickel active material

Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a porous shell, wherein a porosity of the porous shell may be greater than a porosity of the porous core, and a dense intermediate layer may be disposed between the porous core and the porous shell, wherein a porosity of the dense intermediate layer may be lower than the porosity of the porous core and the porosity of the porous shell; a method of preparing the same; a nickel-based active material for a lithium secondary battery formed therefrom; and a lithium secondary battery containing a positive electrode including the same.

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Yongin-si, South Korea

Minah Cha