公开(公告)号：EP4434941A1

公开(公告)日：2024-09-25

申请号：EP23855173.3

申请日：2023-08-17

申请人： LG Chem, Ltd.

发明人： HWANG, Byung Hyun ,  KIM, Nam Il ,  JUNG, Hyun Jin ,  BEAK, Chan Ju ,  HWANG, Hye Youn ,  PARK, Hyun Ah ,  KANG, Seong Hoon ,  HONG, Won Taek ,  KIM, Won Tae ,  KIM, Woo Hyun ,  KIM, Jun Gil ,  YOON, Ju Han ,  PARK, Young Su

IPC分类号： C01G53/00 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02

CPC分类号： H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  Y02E60/10

摘要： The present invention relates to a positive electrode active material precursor, a method for preparing the same, a positive electrode active material, and a method for preparing a positive electrode active material, and provides: a positive electrode active material precursor including Ni and Mn and secondary particles formed by the aggregation of a plurality of primary particles, wherein the secondary particles have a ratio of a core area to a total area of the particles (core area/total area) of 28.7% to 34.1%, and the porosity represented by Equation 1 below is 11.3% to 11.7%; a method for preparing the positive electrode active material precursor; a positive electrode active material including a reaction product of the positive electrode active material precursor and a lithium raw material; and a method for preparing a positive electrode active material using the positive electrode active material precursor.

公开(公告)号：EP3984631A1

公开(公告)日：2022-04-20

申请号：EP20901028.9

申请日：2020-12-17

申请人： LG Chem, Ltd.

发明人： LEE, Eun Hee ,  HWANG, Byung Hyun ,  HONG, Won Taek ,  PARK, Young Su

IPC分类号： B01J19/18 ,  B01J19/00 ,  C01G53/00

摘要： The present invention relates to a manufacturing apparatus of a precursor for positive electrode active material and a manufacturing method of a precursor for positive electrode active material using the manufacturing apparatus, wherein the manufacturing apparatus includes a reactor configured to receive a reaction solution and produce a precursor for positive electrode active material through a co-precipitation reaction of the reaction solution, a filtration unit disposed inside the reactor and configured to discharge a filtrate excluding solids in the reaction solution to the outside of the reactor when the reaction solution reaches a predetermined solution level, an extraction unit configured to extract a portion of the reaction solution when the size of a precursor particle in the reaction solution reaches a predetermined size, and a storage tank configured to receive a reaction solution extracted from the reactor through the extraction unit.

公开(公告)号：EP3869594A1

公开(公告)日：2021-08-25

申请号：EP19886156.9

申请日：2019-11-19

申请人： LG Chem, Ltd.

发明人： HWANG, Byung Hyun ,  YANG, Song Yi ,  KIM, Seong Bae ,  KIM, Woo Hyun ,  SHIN, Sun Sik ,  LEE, Eun Hee

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M10/052 ,  C01G53/00

摘要： The present invention provides a positive electrode active material which is a lithium transition metal oxide containing nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium transition metal oxide has 60 mol% or more nickel (Ni) with respect the total number of moles of transition metal except lithium, and is doped with at least any one doping element selected from the group consisting of B, Zr, Mg, Ti, Sr, W, and Al, and the positive electrode active material has an average particle diameter (D 50 ) of 4 µm to 10 µm after rolling at a rolling density of 3.0 g/cm 3 to 3.3 g/cm 3 and has the form of a single particle, and provides a method of preparing the positive electrode active material, a positive electrode including the positive electrode active material, and a lithium secondary battery.

公开(公告)号：EP3742533A1

公开(公告)日：2020-11-25

申请号：EP19814909.8

申请日：2019-06-07

申请人： LG CHEM, LTD.

发明人： LEE, Eun Hee ,  KIM, Seong Bae ,  PARK, Young Su ,  LIM, Yi Rang ,  PARK, Hong Kyu ,  YANG, Song Yi ,  HWANG, Byung Hyun ,  KIM, Woo Hyun

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/62 ,  C01G53/00 ,  H01M10/052

摘要： The present invention relates to a positive electrode active material for a secondary battery which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol% or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.