公开(公告)号：US20250011189A1

公开(公告)日：2025-01-09

申请号：US18711264

申请日：2023-04-04

Applicant: LG Chem, Ltd.

Inventor： Woo Ram Lee ,  Dong Jin Kim ,  Sang Soon Choi ,  Jae Geun Kim

IPC: C01G53/00

Abstract: present disclosure A method for preparing a positive electrode active material capable of implementing a battery excellent in both initial capacity and lifespan properties includes (A) mixing a positive electrode active material precursor containing 80 mol % or greater of nickel (Ni) in all metals with a lithium-containing raw material, and then performing primary firing on the mixture to prepare a primary fired product, and (B) mixing the primary fired product and a nickel compound, and then performing secondary firing on the mixture to prepare a lithium transition metal oxide. The nickel compound is added such that the mol % of nickel contained in the nickel compound is greater than 0.01 mol % to less than 0.15 mol % based on the total number of moles of the metals contained in the positive electrode active material precursor.

公开(公告)号：US20240243273A1

公开(公告)日：2024-07-18

申请号：US18288294

申请日：2022-05-11

Applicant: LG Chem, Ltd.

Inventor： Na Ri Kim ,  Sang Soon Choi ,  Dong Ryoung Kang ,  Woo Ram Lee ,  Hyun Ah Park ,  Byeong Guk Kwon ,  Jae Geun Kim

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/131 ,  H01M4/366 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052 ,  C01P2002/50 ,  C01P2002/76 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/028

Abstract: A positive electrode active material and method of preparing the same are disclosed herein. The positive electrode active material can have high capacity and high rate capability. In some embodiments, a positive electrode active material includes lithium transition metal oxide particles having a lithium transition metal oxide represented by Formula 1, wherein an interplanar spacing of (003) crystal planes ((003) d-spacing) of the lithium transition metal oxide of a surface of the particles is larger than a (003) d-spacing of the lithium transition metal oxide inside the particles:






wherein 0.8≤a≤1.2, 0.6≤x

公开(公告)号：US20210265615A1

公开(公告)日：2021-08-26

申请号：US17252805

申请日：2019-09-11

Applicant: LG Chem, Ltd.

Inventor： Sang Soon Choi ,  Hwa Seok Chae ,  Jae Geun Kim ,  Seong Hoon Kang

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

Abstract: A method of preparing a positive electrode material is provided. The method includes mixing a first positive electrode active material precursor having an average particle diameter (D50) of 10 μm to 30 μm with a lithium-containing raw material and pre-sintering the mixture to obtain a first pre-sintered product, mixing a second positive electrode active material precursor having an average particle diameter (D50) different from that of the first positive electrode active material precursor with a lithium-containing raw material and pre-sintering the mixture to obtain a second pre-sintered product, disintegrating each of the first pre-sintered product and the second pre-sintered product, and mixing the disintegrated first pre-sintered product and the disintegrated second pre-sintered product and main-sintering the mixture to obtain a positive electrode material.

公开(公告)号：US20230073433A1

公开(公告)日：2023-03-09

申请号：US17798958

申请日：2021-03-18

Applicant: LG Chem, Ltd.

Inventor： Woo Ram Lee ,  Jun Ho Eom ,  Na Ri Park ,  Dong Ryoung Kang ,  Jae Geun Kim

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052

Abstract: A positive electrode material, a positive electrode including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, a positive electrode material includes a first positive electrode active material having a larger average particle diameter than a second positive electrode active material, wherein the first positive electrode active material and the second positive electrode active material are each independently a lithium transition metal oxide having a molar ratio of nickel of 80 mol % or more relative to the total molar amount of transition metals in the lithium transition metal oxide, and the positive electrode material satisfies Equation (1): 0