公开(公告)号：US20190386298A1

公开(公告)日：2019-12-19

申请号：US16463824

申请日：2017-12-04

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Hyunbeom KIM ,  Hyundeok LEE ,  Minah CHA ,  Wooyoung YANG ,  Jangsuk HYUN

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

Abstract: 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.

公开(公告)号：US20180159128A1

公开(公告)日：2018-06-07

申请号：US15829548

申请日：2017-12-01

Applicant: Samsung SDI Co., Ltd.

Inventor： Jinhwa KIM ,  Hyunbeom KIM ,  Jongmin KIM ,  Wooyoung YANG ,  Donggyu CHANG ,  Jangsuk HYUN

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/04

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/42 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/20 ,  C01P2004/22 ,  C01P2004/24 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/16 ,  C01P2006/40 ,  H01M4/0471 ,  H01M4/505 ,  H01M10/052 ,  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 includes at least one secondary particle that includes at least two primary particle structures, the primary particle structures each including a porous inner portion and an outer portion having a radially arranged structure, and the secondary particle including at least two radial centers.