公开(公告)号：US20210234165A1

公开(公告)日：2021-07-29

申请号：US17229373

申请日：2021-04-13

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Jinhwa KIM ,  Hyunbeom KIM ,  Jaehyun SHIM ,  Wooyoung YANG

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/36 ,  C01G53/04 ,  C01G53/00

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a core, an intermediate layer located on the core, and a shell located on the intermediate layer, wherein porosity gradually decreases in the order of the core, the intermediate layer, and the shell, and each of the intermediate layer and the shell has a radial arrangement structure, a method for producing the nickel-based active material precursor, a nickel-based active material produced therefrom, and a lithium secondary battery including a cathode containing the nickel-based active material.

公开(公告)号：US20200083530A1

公开(公告)日：2020-03-12

申请号：US16462887

申请日：2017-12-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Jinhwa KIM ,  Hyunbeom KIM ,  Jaehyun SHIM ,  Wooyoung YANG

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: Provided are a nickel-based active material precursor for a lithium secondary battery including a core, an intermediate layer located on the core, and a shell located on the intermediate layer, wherein porosity gradually decreases in the order of the core, the intermediate layer, and the shell, and each of the intermediate layer and the shell has a radial arrangement structure, a method for producing the nickel-based active material precursor, a nickel-based active material produced therefrom, and a lithium secondary battery including a cathode containing the nickel-based active material.

公开(公告)号：US20180151876A1

公开(公告)日：2018-05-31

申请号：US15825767

申请日：2017-11-29

Applicant: Samsung SDI Co., Ltd.

Inventor： Jiyoon KIM ,  Jongmin KIM ,  Jaehyun SHIM ,  Donggyu CHANG

IPC: H01M4/38 ,  H01M10/052 ,  H01M4/04

CPC classification number: H01M4/38 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are a nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material may include a secondary particle including an agglomerate of at least two plate primary particles, wherein at least a part of the secondary particle has a structure in which the plate primary particles are arranged radially, and a porosity of an exterior portion of the secondary particle is greater than that of an interior portion of the secondary particle.