公开(公告)号：EP4451388A2

公开(公告)日：2024-10-23

申请号：EP24196333.9

申请日：2022-04-11

申请人： SK On Co., Ltd.

发明人： HWANG, Hae Suk ,  LEE, Sang Han

IPC分类号： H01M4/525

摘要： An anode active material for a lithium secondary battery according to an embodiment of the present invention includes a first anode active material and a second anode active material, each of which includes a carbon-based active material and has a crystallite size in a range from 50 nm to 60 nm. An XRD orientation ratio of the first anode active material is in a range from 0.9 to 1.2, and an XRD orientation ratio of the second anode active material is in a range from 1 to 5. High-temperature storage and life-span properties are improved while maintaining high capacity using the combination of the first and second anode active materials.

公开(公告)号：EP4250420A1

公开(公告)日：2023-09-27

申请号：EP23162747.2

申请日：2023-03-17

申请人： SK On Co., Ltd.

发明人： LEE, Jong Hyuk ,  LEE, Sang Han ,  KIM, Jung Hwan ,  CHO, In Haeng ,  HA, Dong Wook

IPC分类号： H01M10/052 ,  H01M10/056 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/131 ,  H01M4/505 ,  H01M4/52 ,  H01M4/62 ,  H01M4/02

摘要： A cathode composition for a lithium secondary battery is provided. The cathode composition for a lithium secondary battery according to embodiments of the present invention includes a cathode active material including cathode active material particles having a single particle shape, flake graphite, and a conductive material including an amorphous carbon-based conductive material. Thereby, energy density and life-span properties of the lithium secondary battery may be improved.

公开(公告)号：EP4280303A1

公开(公告)日：2023-11-22

申请号：EP23173885.7

申请日：2023-05-17

申请人： SK On Co., Ltd. ,  SK Innovation Co., Ltd.

发明人： LEE, Sang Han ,  LEE, Ju Wook ,  LEE, Jong Hyuk ,  KIM, Jung Hwan ,  PARK, Soo Min ,  CHO, In Haeng ,  HA, Dong Wook

IPC分类号： H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0565

摘要： A cathode (100) for a lithium secondary battery includes a cathode current collector, and a cathode active material layer (110) satisfying a specific formula formed on the cathode current collector (105). The cathode active material layer (110) includes lithium metal oxide particles that have a single-particle shape, and a single-crystalline structure or a poly-crystalline structure including two or more single crystals. A lithium secondary battery including the cathode (100), and a method of preparing a cathode active material are also provided.

公开(公告)号：EP4080603A3

公开(公告)日：2022-11-02

申请号：EP22167716.4

申请日：2022-04-11

申请人： SK On Co., Ltd.

发明人： HWANG, Hae Suk ,  LEE, Sang Han

IPC分类号： H01M4/133 ,  H01M4/36 ,  H01M4/587 ,  H01M4/525

摘要： An anode active material for a lithium secondary battery according to an embodiment of the present invention includes a first anode active material and a second anode active material, each of which includes a carbon-based active material and has a crystallite size in a range from 50 nm to 60 nm. An XRD orientation ratio of the first anode active material is in a range from 0.9 to 1.2, and an XRD orientation ratio of the second anode active material is in a range from 1 to 5. High-temperature storage and life-span properties are improved while maintaining high capacity using the combination of the first and second anode active materials.

公开(公告)号：EP4053945A2

公开(公告)日：2022-09-07

申请号：EP22156654.0

申请日：2022-02-14

申请人： SK On Co., Ltd.

发明人： KANG, Min Gu ,  LEE, Sang Han ,  CHO, Yong Hyun

IPC分类号： H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525

摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer comprising a first cathode active material layer and a second cathode active material layer sequentially stacked on the cathode current collector. The first cathode active material layer includes first cathode active material particles having a secondary particle structure, and the second cathode active material layer includes second cathode active material particles having a single particle shape. A ratio of a SPAN value of the second cathode active material particles relative to a SPAN value of the first cathode active material particles is in a range from 2 to 4.5.

公开(公告)号：EP4216297A1

公开(公告)日：2023-07-26

申请号：EP22217277.7

申请日：2022-12-30

申请人： SK On Co., Ltd.

发明人： KIM, Jung Hwan ,  HA, Dong Wook ,  PARK, Soo Min ,  LEE, Sang Han ,  LEE, Jong Hyuk ,  CHO, In Haeng

IPC分类号： H01M4/02 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36 ,  H01M10/052

摘要： A cathode for a lithium secondary battery according to embodiments of the present invention includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes first lithium metal oxide particles each having a secondary particle shape in which primary particles are aggregated and second lithium metal oxide particles each having a single particle shape. A cross-section of the cathode active material layer from an SEM satisfies Equations 1 and 2.

公开(公告)号：EP4210131A2

公开(公告)日：2023-07-12

申请号：EP22216969.0

申请日：2022-12-28

申请人： SK On Co., Ltd.

发明人： CHO, In Haeng ,  KIM, Jung Hwan ,  LEE, Sang Han ,  LEE, Jong Hyuk ,  HA, Dong Wook

IPC分类号： H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

摘要： A lithium secondary battery includes a cathode including a cathode current collector and a cathode active material layer disposed on at least one surface of the cathode current collector, the cathode active material layer including a cathode active material including first cathode active material particles, each of which has a single particle shape; an anode facing the cathode; and a non-aqueous electrolyte including a non-aqueous organic solvent that contains a fluorine-based organic solvent, a lithium salt and an additive.

公开(公告)号：EP4187630A1

公开(公告)日：2023-05-31

申请号：EP22209300.7

申请日：2022-11-24

申请人： SK On Co., Ltd.

发明人： KANG, Min Gu ,  LEE, Sang Han ,  CHO, Yong Hyun

IPC分类号： H01M4/04 ,  H01M4/36 ,  H01M10/0525

摘要： A cathode for a lithium secondary battery is provided. The cathode for a lithium secondary battery includes a current collector, and a first cathode active material layer formed by being pressed on at least one surface of the current collector. The first cathode active material layer includes first lithium-transition metal composite oxide particles. A pressed ratio of the current collector is 25% or less, and an electrode density is 3.4 g/cc or more.

公开(公告)号：EP4053945A3

公开(公告)日：2022-09-28

申请号：EP22156654.0

申请日：2022-02-14

申请人： SK On Co., Ltd.

发明人： KANG, Min Gu ,  LEE, Sang Han ,  CHO, Yong Hyun

IPC分类号： H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/36 ,  H01M4/02

摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer comprising a first cathode active material layer and a second cathode active material layer sequentially stacked on the cathode current collector. The first cathode active material layer includes first cathode active material particles having a secondary particle structure, and the second cathode active material layer includes second cathode active material particles having a single particle shape. A ratio of a SPAN value of the second cathode active material particles relative to a SPAN value of the first cathode active material particles is in a range from 2 to 4.5.

公开(公告)号：EP4357306A1

公开(公告)日：2024-04-24

申请号：EP23203091.6

申请日：2023-10-11

申请人： SK On Co., Ltd.

发明人： LEE, Sang Han ,  LEE, Sang Wook ,  LIM, Byoung Beom ,  CHO, Yong Hyun

IPC分类号： C01G53/00 ,  H01M4/00

CPC分类号： C01G53/42 ,  C01P2002/5220130101 ,  C01P2002/7420130101 ,  H01M4/00

摘要： A positive electrode active material according to an Example of the present invention may comprise a lithium layer doped with a first doping element and a transition metal layer doped with a second doping element, wherein an I(003)/I(006) peak intensity ratio in X-ray diffraction measurement is equal to or less than 23.8.