公开(公告)号：US20230178725A1

公开(公告)日：2023-06-08

申请号：US18060684

申请日：2022-12-01

Applicant: Samsung SDI Co., Ltd.

Inventor： Pilsang YUN ,  Do-Yu KIM ,  Hyunbeom KIM ,  Sangin PARK ,  Yongchan YOU

IPC: H01M4/525 ,  H01M50/46 ,  H01M10/0569 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/44 ,  H01M50/578

CPC classification number: H01M4/525 ,  H01M50/46 ,  H01M10/0569 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/445 ,  H01M10/448 ,  H01M50/578 ,  H01M2004/028

Abstract: A rechargeable lithium battery includes a positive electrode including a positive electrode active material including a secondary particle in which a plurality of primary particles are aggregated, the secondary particle having at least a portion of the primary particles radially arranged and comprising a lithium nickel-based composite oxide, and a boron coating layer on the surface of the secondary particle and including lithium borate; a negative electrode; a separator between the positive electrode and the negative electrode; an electrolyte including vinylene carbonate; and a case containing the positive electrode, the negative electrode, the separator, and the electrolyte.

公开(公告)号：US20210074998A1

公开(公告)日：2021-03-11

申请号：US17102332

申请日：2020-11-23

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Pilsang YUN ,  Jongmin KIM

IPC: H01M4/131 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525

Abstract: A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure, wherein the first and second positive active materials may each include nickel-based positive active materials and the surface of the second positive active material is coated with a boron-containing compound. Further embodiments provide a method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material.

公开(公告)号：US20180026267A1

公开(公告)日：2018-01-25

申请号：US15654623

申请日：2017-07-19

Applicant: Samsung SDI Co., Ltd.

Inventor： Jongmin KIM ,  Jiyoon KIM ,  Pilsang YUN ,  Donggyu CHANG ,  Kwanghwan CHO ,  Jangsuk HYUN ,  Jinhwa KIM

IPC: H01M4/525 ,  H01M4/485 ,  H01M10/052

CPC classification number: H01M4/525 ,  C01G53/50 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/90 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/40 ,  H01M4/485 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

Abstract: 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 comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.