公开(公告)号：EP4376126A1

公开(公告)日：2024-05-29

申请号：EP23178733.4

申请日：2023-06-12

申请人： SK On Co., Ltd.

发明人： MOON, Gi Hyeon ,  LEE, Jong Hyuk ,  LEE, Mi Ryeong ,  KANG, Hee Gyoung

IPC分类号： H01M4/36 ,  H01M4/62

CPC分类号： H01M4/366 ,  H01M2004/02120130101 ,  H01M10/052 ,  H01M4/62

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：EP4203086A1

公开(公告)日：2023-06-28

申请号：EP22213493.4

申请日：2022-12-14

申请人： SK On Co., Ltd.

发明人： MOON, Gi Hyeon ,  LEE, Jong Hyuk ,  LEE, Mi Ryeong ,  KANG, Hee Gyoung ,  KIM, Hyeon A

IPC分类号： H01M4/04 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/62 ,  H01M10/0525

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：EP4456177A2

公开(公告)日：2024-10-30

申请号：EP24172798.1

申请日：2024-04-26

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

发明人： KIM, Hyeon A ,  MOON, Gi Hyeon ,  LEE, Jong Hyuk ,  KANG, Kyeong Hyeon ,  KIL, Hyo Shik

IPC分类号： H01M4/133 ,  H01M4/36 ,  H01M4/62

摘要： Anode active materials for secondary batteries, anodes that include the anode active materials, and secondary batteries that include the anodes are disclosed. In an embodiment, an anode active material for a secondary battery may include a plurality of core particles, and one or more coating layers including lithium salt, each coating layer formed on a surface of at least one of the plurality of core particles.

公开(公告)号：EP4053934A2

公开(公告)日：2022-09-07

申请号：EP22159012.8

申请日：2022-02-25

申请人： SK On Co., Ltd.

发明人： KANG, Hee Gyoung ,  MOON, Gi Hyeon ,  PARK, So Hyun ,  LEE, Mi Ryeong ,  LEE, Jong Hyuk ,  JEON, Chan Young ,  HWANG, Hae Suk

IPC分类号： H01M4/13 ,  H01M10/052 ,  H01M10/0585 ,  H01M50/46 ,  H01M50/463 ,  H01M50/531 ,  H01M4/02

摘要： The lithium secondary battery includes a cathode which includes a cathode active material layer including a cathode current collector, a cathode tab protruding from one end thereof in a longitudinal direction of the cathode current collector, a second cathode portion disposed spaced apart from the cathode tab on the cathode current collector, and a first cathode portion disposed adjacent to the cathode tab on the cathode current collector and having an electrode density higher than that of the second cathode portion, and an anode disposed to face the cathode. Life-span characteristics of the lithium secondary battery may be improved by controlling the electrode density in the peripheral part of the cathode tab.