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公开(公告)号：US20220106199A1
公开(公告)日：2022-04-07
申请号：US17430407
申请日：2020-09-29
Applicant: LG Chem, Ltd.
Inventor： Ho Suk Shin , Won Tae Kim , Jong Yeol Yu , Young Geun Lim , Sun Sik Shin , Seoung Chul Ha
Abstract: A method for preparing a positive electrode active material is provided. The method includes a first step for adding, to a reactor, a reaction solution including a transition metal-containing solution containing at least one among nickel, cobalt, and manganese, an ammonium ion-containing solution, and a basic aqueous solution to form seeds of precursor particles; a second step for preparing carbon-introduced precursor particles by adding a carbon source to the reactor when the precursor particles grow until the average particle diameter (D50) is 30% in size of the average particle diameter (D50) of the finally prepared precursor particles; and a third step for mixing the carbon-introduced precursor particles and a lithium raw material and sintering the mixture at a temperature of 750° C. to 950° C. to prepare positive electrode active material particles.
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公开(公告)号：US10128502B2
公开(公告)日：2018-11-13
申请号：US15124491
申请日：2015-03-12
Inventor： Hoe Jin Hah , Sun Sik Shin , Kyoung Ho Kim , Il Hong Kim , Je Young Kim , Kisuk Kang , Jihyun Hong
IPC: H01M4/00 , H01M4/525 , H01M4/505 , C01G53/00 , C01G55/00 , H01M4/36 , H01M4/485 , H01M10/0525 , H01M4/131 , H01M10/052 , H01M4/02
Abstract: Disclosed herein are a positive electrode active material including at least one selected from among compounds represented by Formula 1 below and a lithium secondary battery including the same that is capable of improving lifetime characteristics and rate characteristics while exhibiting excellent safety: xLi2MyMn(1-y)O3-zAz*(1−x)LiM′O2-z′A′z′ (1), where M is at least one element selected from a group consisting of Ru, Mo, Nb, Te, Re, Ir, Pt, Cr, S, W, Os, and Po, M′ is at least one element selected from a group consisting of Ni, Ti, Co, Al, Mn, Fe, Mg, B, Cr, Zr, Zn, and second row transition metals, A and A′ are each independently a negative monovalent or divalent anion, and 0
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3.发明授权公开(公告)号：US10056611B2
公开(公告)日：2018-08-21
申请号：US15371614
申请日：2016-12-07
Applicant: LG Chem, Ltd.
Inventor： Bo Ram Lee , Ji Hye Kim , Sun Sik Shin , Wang Mo Jung
CPC classification number: H01M4/485 , G01R31/3865 , G01R31/388 , H01M4/131 , H01M10/052 , H01M10/4285 , H01M2004/028
Abstract: The present disclosure provides a method for testing a cycle life of a positive electrode active material for a secondary battery capable of predicting and assessing a cycle life of a positive electrode active material with high accuracy and excellent reliability in a short period of time using a simple method.
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4.发明申请公开(公告)号：US20170176543A1
公开(公告)日：2017-06-22
申请号：US15371614
申请日：2016-12-07
Applicant: LG Chem, Ltd.
Inventor： Bo Ram Lee , Ji Hye Kim , Sun Sik Shin , Wang Mo Jung
CPC classification number: H01M4/485 , G01R31/3637 , G01R31/3641 , H01M4/131 , H01M10/052 , H01M10/4285 , H01M2004/028
Abstract: The present disclosure provides a method for testing a cycle life of a positive electrode active material for a secondary battery capable of predicting and assessing a cycle life of a positive electrode active material with high accuracy and excellent reliability in a short period of time using a simple method.
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5.发明申请PRECURSOR OF ELECTRODE ACTIVE MATERIAL COATED WITH METAL AND METHOD OF PREPARING THE SAME 审中-公开用金属涂覆的电极活性材料的前驱体及其制备方法公开(公告)号：US20150280225A1
公开(公告)日：2015-10-01
申请号：US14440194
申请日：2013-11-26
Applicant: LG CHEM, LTD.
Inventor： Dae Jin Lee , Joo Hong Jin , Woo Yeon Kong , Sun Sik Shin , Wang Mo Jung
IPC: H01M4/36 , H01M10/04 , H01M10/0525 , H01M4/525 , H01M4/505
CPC classification number: H01M4/366 , C01G53/006 , H01M4/505 , H01M4/525 , H01M4/587 , H01M10/049 , H01M10/0525
Abstract: Disclosed are a precursor of an electrode active material for a lithium secondary battery, in which a metal material ionizable through electrolytic decomposition is uniformly coated on a surface of a primary precursor formed of a transition metal hydrate, and a method of preparing the same.
Abstract translation: 公开了一种用于锂二次电池的电极活性材料的前体及其制备方法，其中通过电解分解可离子化的金属材料均匀地涂覆在由过渡金属水合物形成的初级前体的表面上。
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Patent Agency Ranking
公开(公告)号：US20240120459A1
公开(公告)日：2024-04-11
申请号：US18277319
申请日：2022-11-24
Applicant: LG Chem, Ltd.
Inventor： Min Kyu You , Sun Sik Shin , Joo Hong Jin , June Woo Lee , Ji A Shin , Min Joo Park
IPC: H01M4/04 , H01M4/505 , H01M4/525 , H01M10/052
CPC classification number: H01M4/0471 , H01M4/505 , H01M4/525 , H01M10/052 , H01M2004/028
Abstract: A method of preparing a positive electrode active material having a high ratio of charge and discharge capacity at a charge end voltage of 4.1 V to 4.175 V to charge and discharge capacity at a charge end voltage of 4.2 V to 4.275 V and having an excellent initial charge and discharge capacity is provided.
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7.发明申请公开(公告)号：US20220131155A1
公开(公告)日：2022-04-28
申请号：US17428407
申请日：2020-08-11
Applicant: LG Chem, Ltd.
Inventor： Joo Hong Jin , Min Kyu You , Sun Sik Shin , Kyung Lok Lee , Ji A Shin
Abstract: A positive electrode includes: a positive electrode active material layer formed on a surface of a positive electrode current collector, including two types of positive electrode active materials with different average particle diameters (D50), a conductive material, and a binder; and a carbon-based coating layer formed on a surface of the positive electrode active material layer. The two types of positive electrode active materials are each represented by Chemical Formula 1 below. The carbon-based coating layer includes a sphere-type conductive material and a binder, where the binder is included in an amount of 5 parts by weight or more and less than 10 parts by weight with respect to 100 parts by weight of the carbon-based coating layer. Li1+aNixCoyMzO2 [Chemical Formula 1] In Chemical Formula 1, 0≤a≤0.5, 0
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公开(公告)号：US20210036318A1
公开(公告)日：2021-02-04
申请号：US16630720
申请日：2018-10-11
Applicant: LG Chem, Ltd.
Inventor： Won Tae Kim , Sun Sik Shin , Yeo June Yoon , Hong Kyu Park , Seong Hoon Kang , Jong Yeol Yu
IPC: H01M4/525 , H01M4/36 , H01M10/0525 , C01G51/00 , H01M4/02
Abstract: A method of preparing a positive electrode active material includes mixing a lithium raw material and a nickel-containing transition metal hydroxide precursor containing nickel in an amount of 65 mol % or more based on a total number of moles of transition metals and performing a first heat treatment to prepare a nickel-containing lithium transition metal oxide. The method also includes mixing a boron and carbon-containing raw material and a cobalt-containing raw material with the nickel-containing lithium transition metal oxide to form a mixture, and performing a second heat treatment on the mixture to form a coating material including B and Co on a surface of the lithium transition metal oxide. A positive electrode active material prepared by the preparation method is formed, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode active material.
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公开(公告)号：US10573888B2
公开(公告)日：2020-02-25
申请号：US15964305
申请日：2018-04-27
Applicant: LG Chem, Ltd.
Inventor： Bo Ram Lee , Hye Lim Jeon , Sun Sik Shin , Sangwook Lee , Wang Mo Jung
IPC: H01M4/36 , H01M4/505 , H01M4/62 , H01M4/131 , H01M4/1391 , H01M4/04 , H01M4/1315 , H01M4/485 , H01M4/525 , H01M10/0525 , H01M10/052 , H01M4/02
Abstract: Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor: LixMO2 (1) wherein M is represented by MnaM′1-b, M′ is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95≤x≤1.5, and 0.5≤a≤1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability.
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公开(公告)号：US20190252679A1
公开(公告)日：2019-08-15
申请号：US16394624
申请日：2019-04-25
Applicant: LG Chem, Ltd.
Inventor： Sang Min Park , Sun Sik Shin , Byung Chun Park , Hye Lim Jeon , Bo Ram Lee
CPC classification number: H01M4/505 , C01G45/006 , C01G45/1228 , C01G45/1257 , C01G51/006 , C01G51/50 , C01G51/56 , C01G53/006 , C01G53/50 , C01G53/56 , C01P2004/03 , C01P2006/40 , H01M10/052 , H01M2004/028 , Y02T10/7011
Abstract: Disclosed are a precursor for preparation of a lithium composite transition metal oxide, a method for preparing the same and a lithium composite transition metal oxide obtained from the same. More particularly, the transition metal precursor which has a composition represented by Formula 1 below and is prepared in an aqueous transition metal solution, mixed with a transition metal-containing salt, including an alkaline material, the method for preparing the same and the lithium composite transition metal oxide obtained from the same are disclosed. MnaMb(OH1-x)2-yAy (1) wherein M is at least one selected form the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; A is at least one selected form the group consisting of anions of PO4, BO3, CO3, F and NO3, and 0.5≤a≤1.0; 0≤b≤0.5; a+b=1; 0
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