公开(公告)号：EP4329001A1

公开(公告)日：2024-02-28

申请号：EP23192835.9

申请日：2023-08-23

申请人： Samsung SDI Co., Ltd.

发明人： MOON, Jongseok ,  KIM, Youngsoo ,  PARK, Jinhwan

IPC分类号： H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M4/02

摘要： A composite anode active material includes: a silicon-containing composite structure; a first carbon-based coating layer on the silicon-containing composite structure and including first amorphous carbon; and second amorphous carbon within the silicon-containing composite structure, wherein the silicon-containing composite structure includes porous silicon secondary particles; and first carbon flakes on the porous silicon secondary particles, the porous silicon secondary particles each including an agglomerate of a plurality of silicon composite primary particles, wherein the silicon composite primary particles include silicon, a silicon suboxide (SiO x , 0

公开(公告)号：EP4258407A1

公开(公告)日：2023-10-11

申请号：EP21900898.4

申请日：2021-11-23

申请人： Samsung SDI Co., Ltd.

发明人： KANG, Yoon-Sok ,  KIM, Youngsoo ,  PARK, Jinhwan ,  HONG, Suk-Gi ,  HWANG, Taehyun

IPC分类号： H01M10/0567 ,  H01M4/66 ,  H01M10/052

摘要： The present invention relates to a rechargeable lithium battery, the battery comprising: a positive electrode; a negative electrode; and an electrolyte comprising a smoothing additive having a reduction potential of at least -0.5 V, but less than 0.9 V.

公开(公告)号：EP3618153A1

公开(公告)日：2020-03-04

申请号：EP19193692.1

申请日：2019-08-27

申请人： Samsung Electronics Co., Ltd. ,  Samsung SDI Co., Ltd.

发明人： KIM, Youngsoo ,  RYU, Younggyoon ,  YOON, Jaegu ,  LEE, Seungyeon

IPC分类号： H01M4/525 ,  H01M4/62 ,  H01M10/052 ,  H01M4/02

摘要： A cathode includes: a cathode active material comprising a lithium transition metal oxide; a conductive material; and a binder, wherein the lithium transition metal oxide includes nickel and a transition metal other than nickel, wherein the lithium transition metal oxide has a layered crystal structure, wherein a content of the nickel is 30 mole percent or greater, based on a total number of moles of transition metals of the lithium transition metal oxide, wherein the conductive material comprises a linear carbon conductive material, wherein the binder includes a first binder, wherein the first binder including fluorine and a polar functional group, and a second binder, which does not include fluorine, and wherein an amount of the linear carbon conductive material is 0.1 weight percent or greater, based on a total combined weight of the cathode active material, the conductive material, and the binder.

公开(公告)号：EP4213233A1

公开(公告)日：2023-07-19

申请号：EP21867025.5

申请日：2021-08-26

申请人： Samsung SDI Co., Ltd. ,  Seoul National University R & DB Foundation

发明人： HWANG, Taehyun ,  KANG, Kisuk ,  KANG, Yoon-Sok ,  KIM, Youngsoo ,  PARK, Jinhwan ,  HONG, Suk-Gi ,  NONGLAK, Meethong ,  ORAPA, Tamwattana ,  KIM, Jihyeon ,  PARK, Hyeokjun ,  YOON, Gabin

IPC分类号： H01M4/13 ,  H01M4/134 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M4/02

摘要： The present invention relates to a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same, wherein the negative electrode comprises a current collector, and a coating layer which is located on the current collector and comprises polyvinylidene fluoride polymer and LiF.