公开(公告)号：US20240347710A1

公开(公告)日：2024-10-17

申请号：US18751715

申请日：2024-06-24

申请人： SK On Co., Ltd

发明人： Gi Hyeon Moon ,  Jong Hyuk Lee ,  Mi Ryeong Lee ,  Hee Gyoung Kang

IPC分类号： H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/583 ,  H01M4/62 ,  H01M10/052

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/583 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028

摘要： An electrode for a lithium secondary battery includes an electrode current collector, an electrode active material layer formed on at least one surface of the electrode current collector and including electrode active material particles, and a lithium salt-containing coating formed on at least portions of surfaces of the electrode active material particles or at least a portion of the surface of the electrode active material layer. The electrode for a lithium secondary battery may have a predetermined surface roughness.

公开(公告)号：US11710874B2

公开(公告)日：2023-07-25

申请号：US17183440

申请日：2021-02-24

申请人： SK On Co., Ltd.

发明人： Jong Hyuk Lee ,  Su Hee Han ,  Hee Gyoung Kang

IPC分类号： H01M50/342 ,  H01M10/42 ,  H01M10/48 ,  H01M50/507 ,  H01M50/502 ,  H01M50/572

CPC分类号： H01M50/342 ,  H01M10/4228 ,  H01M10/482 ,  H01M50/507 ,  H01M2200/20

摘要： A battery module according to an embodiment of the present invention includes: a battery stack in which a plurality of battery cells including a cathode tab and an anode tab are stacked; a first bus bar assembly including a first bus bar connecting cathode tabs and anode tabs located at one end of the battery stack; and a second bus bar assembly including a second bus bar connecting cathode tabs and anode tabs located at the other end of the battery stack. The first bus bar assembly or the second bus bar assembly may include a venting part including at least one venting knife which protrudes from the first bus bar or the second bus bar toward the battery cell, such that stability of the battery module may be improved.

公开(公告)号：US20240170642A1

公开(公告)日：2024-05-23

申请号：US18351183

申请日：2023-07-12

申请人： SK ON CO., LTD.

发明人： Gi Hyeon Moon ,  Jong Hyuk Lee ,  Mi Ryeong Lee ,  Hee Gyoung Kang

IPC分类号： H01M4/131 ,  H01M10/052

CPC分类号： H01M4/131 ,  H01M10/052 ,  H01M2004/021

摘要： An electrode for a lithium secondary battery includes an electrode current collector, an electrode active material layer formed on at least one surface of the electrode current collector and including electrode active material particles, and a lithium salt-containing coating formed on at least portions of surfaces of the electrode active material particles or at least a portion of the surface of the electrode active material layer. The electrode for a lithium secondary battery may have a predetermined surface roughness.

公开(公告)号：US20230197936A1

公开(公告)日：2023-06-22

申请号：US18078242

申请日：2022-12-09

申请人： SK ON CO., LTD.

发明人： Gi Hyeon MOON ,  Jong Hyuk Lee ,  Mi Ryeong Lee ,  Hee Gyoung Kang ,  Hyeon A Kim

IPC分类号： H01M4/36 ,  H01M4/13 ,  H01M4/62 ,  C08F216/06

CPC分类号： H01M4/366 ,  C08F216/06 ,  H01M4/13 ,  H01M4/62 ,  H01M2004/021

摘要： An electrode for a lithium secondary battery according to exemplary embodiments includes: an electrode current collector; an electrode active material layer which is formed on at least one surface of the electrode current collector, and includes electrode active material; and a polymer coating which is formed on the electrode active material or the electrode active material layer, and includes polyvinyl alcohol. The polyvinyl alcohol may have an IR spectral peak intensity ratio within a predetermined range. Accordingly, a secondary battery, in which a side reaction between the active material and the electrolyte may be prevented, and structural stability and cycle characteristics are improved, is provided.

公开(公告)号：US20230012523A1

公开(公告)日：2023-01-19

申请号：US17855978

申请日：2022-07-01

申请人： SK On Co., Ltd.

发明人： Chan Young Jeon ,  Hee Gyoung Kang ,  So Hyun Park ,  Hae Suk Hwang

IPC分类号： H01M4/583 ,  H01M10/0525

摘要： The present invention provides an electrode for a secondary battery that includes a current collector and an electrode active material layer that is formed on the current collector and contains an electrode active material, and satisfies Relational Expression 1, 7≤total surface area of active material particles per unit volume of electrode active material layer ≤10 and Relational Expression 2, 20≤total surface area of effective pores per unit volume of electrode active material layer ≤29.

公开(公告)号：US20220336810A1

公开(公告)日：2022-10-20

申请号：US17723796

申请日：2022-04-19

申请人： SK ON CO., LTD.

发明人： Hae Suk Hwang ,  Mi Ryeong Lee ,  Hee Gyoung Kang ,  Jong Hyuk Lee

IPC分类号： H01M4/587 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/04 ,  H01M4/1393 ,  H01M4/36

摘要： An anode for a lithium secondary battery according to an embodiment of the present invention includes a current collector, and an anode active material layer coated on the current collector. The anode active material layer includes an anode active material that includes natural graphite particles, and has an electrode density of 1.50 g/cc or more. An XRD orientation index defined as I(004)/I(110) is 8 or less, I(004) is a peak intensity corresponding to a (004) plane of the anode active material obtained by an XRD measurement from the anode active material layer, and I(110) is a peak intensity corresponding to a (110) plane of the anode active material obtained by the XRD measurement from the anode active material layer.

公开(公告)号：US11978883B2

公开(公告)日：2024-05-07

申请号：US17551886

申请日：2021-12-15

申请人： SK On Co., Ltd.

发明人： Jong Hyuk Lee ,  Mi Ryeong Lee ,  Hee Gyoung Kang

IPC分类号： H01M4/04 ,  H01M4/62

CPC分类号： H01M4/0416 ,  H01M4/0404 ,  H01M4/621

摘要： Provided is a fabrication method of an electrode for a secondary battery including coating an electrode slurry containing an electrode active material and a binder on a current collector; drying the current collector on which the electrode slurry is coated to form an electrode active material layer; and surface-treating the electrode active material layer formed on the current collector to remove a binder layer on a surface of the electrode active material layer.

公开(公告)号：US20230307779A1

公开(公告)日：2023-09-28

申请号：US18204996

申请日：2023-06-02

申请人： SK ON CO., LTD.

发明人： Jong Hyuk Lee ,  Su Hee Han ,  Hee Gyoung Kang

IPC分类号： H01M50/342 ,  H01M50/507 ,  H01M10/42 ,  H01M10/48

CPC分类号： H01M50/342 ,  H01M50/507 ,  H01M10/4228 ,  H01M10/482 ,  H01M2200/20

摘要： A battery module according to an embodiment of the present invention includes a battery stack in which a plurality of battery cells including a cathode tab and an anode tab are stacked; a first bus bar assembly including a first bus bar connecting cathode tabs and anode tabs located at one end of the battery stack; and a second bus bar assembly including a second bus bar connecting cathode tabs and anode tabs located at the other end of the battery stack. The first bus bar assembly or the second bus bar assembly may include a venting part including at least one venting knife which protrudes from the first bus bar or the second bus bar toward the battery cell, such that stability of the battery module may be improved.

公开(公告)号：US20230006206A1

公开(公告)日：2023-01-05

申请号：US17856242

申请日：2022-07-01

申请人： SK On Co., Ltd.

发明人： Chan Young Jeon ,  Hee Gyoung Kang ,  So Hyun Park ,  Hae Suk Hwang

IPC分类号： H01M4/587 ,  H01M10/0525

摘要： The present invention relates to a negative electrode for a secondary battery and a secondary battery including the same. The negative electrode includes a current collector; and a negative electrode active material layer formed on the current collector and containing a negative electrode active material. The negative electrode satisfies the expression D

公开(公告)号：US12062793B2

公开(公告)日：2024-08-13

申请号：US17021145

申请日：2020-09-15

申请人： SK ON CO., LTD.

发明人： Jong Hyuk Lee ,  Dock Young Yoon ,  Hee Gyoung Kang

IPC分类号： H01M4/62 ,  H01M4/04 ,  H01M4/02

CPC分类号： H01M4/625 ,  H01M4/0404 ,  H01M2004/027

摘要： A lithium secondary battery according to exemplary embodiments includes a cathode, a separation layer, and an anode facing the cathode with the separation layer interposed therebetween. The anode includes an anode current collector, and an anode active material layer formed on the anode current collector. The anode active material layer includes an anode active material and a conductive additive. The conductive additive includes an expandable graphite having a particle diameter of 10 μm or less.