公开(公告)号：US20220407063A1

公开(公告)日：2022-12-22

申请号：US17779244

申请日：2021-03-22

Applicant: LG Chem, Ltd.

Inventor： Hyun Uk Kim ,  Eung Ju Lee ,  Woo Hyun Kim ,  Sang Soon Choi ,  Jun Gil Kim ,  Gyeong Il Yoo

IPC: H01M4/525 ,  H01M4/505 ,  C01G53/00

Abstract: A positive electrode active material precursor, a method of preparing the same, and a positive electrode active material, a positive electrode, and a lithium secondary battery prepared from the same. In some embodiments, a positive electrode active material precursor includes nickel, cobalt, and manganese, wherein the positive electrode active material precursor satisfies: Equation 1 (2.5≤C(100)/C(001)≤5.0) and Equation 2 (1.0≤C(101)/C(001)≤3.0), where C(001) is a crystalline size in a (001) plane, C(100) is a crystalline size in a (100) plane, and C(101) is a crystalline size in a (101) plane. The positive electrode active material precursor has particle growth of a (001) plane that is suppressed.

公开(公告)号：US20250070149A1

公开(公告)日：2025-02-27

申请号：US18722796

申请日：2023-08-17

Applicant: LG Chem, Ltd.

Inventor： Byung Hyun Hwang ,  Nam II Kim ,  Hyun Jin Jung ,  Chan Ju Beak ,  Hye Youn Hwang ,  Hyun Ah Park ,  Seong Hoon Kang ,  Won Taek Hong ,  Won Tae Kim ,  Woo Hyun Kim ,  Jun Gil Kim ,  Ju Han Yoon ,  Young Su Park

IPC: H01M4/505 ,  C01G53/00

Abstract: A positive electrode active material precursor includes Ni and Mn and secondary particles formed by the aggregation of a plurality of primary particles. The secondary particles have a ratio of a core area to a total area of the particles ranging from 28.7% to 34.1%, and a porosity ranging from 11.3% to 11.7%. Also provided is a method for preparing the positive electrode active material precursor. Additionally, a positive electrode active material including a reaction product of the positive electrode active material precursor and a lithium raw material is provided. Also provided is a method for preparing a positive electrode active material using the positive electrode active material precursor.