公开(公告)号：US11888151B2

公开(公告)日：2024-01-30

申请号：US16980037

申请日：2019-03-14

申请人： LG Chem, Ltd.

发明人： Chang Wan Koo ,  Ki Tae Kim ,  Sang Hoon Choy

IPC分类号： H01M4/04 ,  H01M4/139 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/056 ,  H01M4/02

CPC分类号： H01M4/139 ,  H01M4/043 ,  H01M4/0404 ,  H01M4/362 ,  H01M4/62 ,  H01M10/056 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0082 ,  H01M2300/0091

摘要： The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.

公开(公告)号：US20230123951A1

公开(公告)日：2023-04-20

申请号：US18085025

申请日：2022-12-20

申请人： LG Chem, Ltd.

发明人： Ki Tae Kim ,  Chang Wan Koo ,  Sang Hoon Choy

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052

摘要： The present invention provides: an electrode mixture manufacturing method comprising the processes of introducing a first binder, an electrode active material, and a conductive material into an extruder, performing a first mixing of the first binder, the electrode active material, and the conductive material in the extruder, additionally introducing a second binder into the extruder and performing a second mixing, and yielding an electrode mixture resulting from the first mixing and the second mixing; an electrode mixture manufactured thereby; and an electrode manufacturing method using the electrode mixture.

公开(公告)号：US11121361B2

公开(公告)日：2021-09-14

申请号：US16339598

申请日：2018-03-21

申请人： LG Chem, Ltd.

发明人： Byoung Hoon Ahn ,  Sang Hoon Choy ,  Chang Wan Koo ,  Hyun Chul Ha

IPC分类号： H01M4/1397 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/62

摘要： The present invention provides a method of preparing a slurry for a secondary battery positive electrode which includes forming a first mixture in a paste state by adding a lithium iron phosphate-based positive electrode active material, a conductive agent, a binder, and a solvent, and preparing a slurry for a positive electrode by mixing while further adding a solvent to the first mixture in the paste state.

公开(公告)号：US10910639B2

公开(公告)日：2021-02-02

申请号：US16069730

申请日：2017-09-27

申请人： LG CHEM, LTD.

发明人： Taek Soo Lee ,  Chang Wan Koo ,  Sang Hoon Choi ,  Jung Min Yang ,  Il Jae Moon

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/13 ,  H01M4/62 ,  H01M4/139 ,  H01M10/0525 ,  H01M4/02

摘要： A multi-layer negative electrode according to an embodiment of the present disclosure includes: a current collector configured to transmit electrons between an outer lead and a negative electrode active material; a first negative electrode mixture layer formed on one surface or both surfaces of the current collector and including a first negative electrode active material and a first binder; and a second negative electrode mixture layer formed on the first negative electrode mixture layer and including a second negative electrode active material, wherein the first negative electrode mixture layer has an electrode density of about 0.9 to 2.0 g/cc and the second negative electrode mixture layer has an electrode density of about 0.2 to 1.7 g/cc, which is a range lower than that of the electrode density of the first negative electrode mixture layer. The multi-layer negative electrode can be included in a lithium secondary battery.

公开(公告)号：US20200321599A1

公开(公告)日：2020-10-08

申请号：US16605415

申请日：2018-09-21

申请人： LG Chem, Ltd.

发明人： Ki Tae Kim ,  Chang Wan Koo ,  Sang Hoon Choy

IPC分类号： H01M4/04 ,  H01M4/62

摘要： The present invention provides a method for manufacturing an electrode, the method comprising the steps of: preparing a lump of mixture bulk; milling the mixture bulk to prepare granular powder having an average particle diameter of 30 micrometers to 180 micrometers; sprinkling the granular powder on the surface of a metal current collector; and rolling the granular powder on the metal current collector to laminate the granular powder on the metal current collector.

公开(公告)号：US11876214B2

公开(公告)日：2024-01-16

申请号：US18085025

申请日：2022-12-20

申请人： LG Chem, Ltd.

发明人： Ki Tae Kim ,  Chang Wan Koo ,  Sang Hoon Choy

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052

CPC分类号： H01M4/362 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/139 ,  H01M4/623 ,  H01M10/052

摘要： The present invention provides: an electrode mixture manufacturing method comprising the processes of introducing a first binder, an electrode active material, and a conductive material into an extruder, performing a first mixing of the first binder, the electrode active material, and the conductive material in the extruder, additionally introducing a second binder into the extruder and performing a second mixing, and yielding an electrode mixture resulting from the first mixing and the second mixing; an electrode mixture manufactured thereby; and an electrode manufacturing method using the electrode mixture.

公开(公告)号：US20200044238A1

公开(公告)日：2020-02-06

申请号：US16339598

申请日：2018-03-21

申请人： LG Chem, Ltd.

发明人： Byoung Hoon Ahn ,  Sang Hoon Choy ,  Chang Wan Koo ,  Hyun Chul Ha

IPC分类号： H01M4/1397 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/36

摘要： The present invention provides a method of preparing a slurry for a secondary battery positive electrode which includes forming a first mixture in a paste state by adding a lithium iron phosphate-based positive electrode active material, a conductive agent, a binder, and a solvent, and preparing a slurry for a positive electrode by mixing while further adding a solvent to the first mixture in the paste state.

公开(公告)号：US20200028174A1

公开(公告)日：2020-01-23

申请号：US16338154

申请日：2018-03-22

申请人： LG Chem, Ltd.

发明人： Byoung Hoon Ahn ,  Houng Sik Yoo ,  Chang Wan Koo ,  Hyun Chul Ha ,  Sang Hoon Choy ,  Jong Won Lee ,  Dong Hyun Kim ,  Gye Min Kwon

IPC分类号： H01M4/62 ,  H01M4/136 ,  H01M4/58 ,  H01M10/0525

摘要： The present invention relates to a positive electrode active material pre-dispersion composition which includes a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, wherein the dispersant includes a hydrogenated nitrile butadiene rubber (HNBR), a slurry composition for a secondary battery positive electrode which is prepared by using the positive electrode active material pre-dispersion composition, a positive electrode for a secondary battery, and a lithium secondary battery including the positive electrode.

公开(公告)号：US11575121B2

公开(公告)日：2023-02-07

申请号：US16604801

申请日：2018-09-27

申请人： LG Chem, Ltd.

发明人： Ki Tae Kim ,  Chang Wan Koo ,  Sang Hoon Choy

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/139 ,  H01M4/62 ,  H01M10/052

摘要： The present invention provides: an electrode mixture manufacturing method comprising the processes of introducing a first binder, an electrode active material, and a conductive material into an extruder, performing a first mixing of the first binder, the electrode active material, and the conductive material in the extruder, additionally introducing a second binder into the extruder and performing a second mixing, and yielding an electrode mixture resulting from the first mixing and the second mixing; an electrode mixture manufactured thereby; and an electrode manufacturing method using the electrode mixture.

公开(公告)号：US20210013487A1

公开(公告)日：2021-01-14

申请号：US16980037

申请日：2019-03-14

申请人： LG Chem, Ltd.

发明人： Chang Wan Koo ,  Ki Tae Kim ,  Sang Hoon Choy

IPC分类号： H01M4/139 ,  H01M4/04 ,  H01M4/62 ,  H01M10/056 ,  H01M10/0525 ,  H01M4/36

摘要： The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.