公开(公告)号：EP4439701A1

公开(公告)日：2024-10-02

申请号：EP23210512.2

申请日：2023-11-17

申请人： AESC Japan Ltd.

发明人： LI, Ruonan

IPC分类号： H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M2004/02120130101 ,  H01M2004/02720130101 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/362 ,  H01M4/386 ,  H01M10/0525

摘要： Disclosed is a silicon-carbon composite material, a preparation method thereof, an electrochemical device and an electronic device. The silicon-carbon composite material includes an amorphous carbon matrix and a silicon material located on the surface and/or in the interior the amorphous carbon matrix, and has specific surface area coefficient B is 20-1250. The preparation method includes synthesizing the amorphous carbon matrix material with silicon source through chemical vapor deposition to obtain the silicon-carbon composite material. The disclosure limits the expansion of the silicon-based material to the greatest possible extent, ensures its long cycle stability and excellent conductive properties, and effectively improves the capacity and first effect of the finished material. The material preparation process is simple and suitable for industrial production.

公开(公告)号：EP4439686A1

公开(公告)日：2024-10-02

申请号：EP23209096.9

申请日：2023-11-10

申请人： AESC Japan Ltd.

发明人： HUANG, Peng ,  LI, Ruonan ,  SUN, Zhonggui ,  SUN, Huayu

IPC分类号： H01M4/04 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

CPC分类号： H01M4/386 ,  H01M4/366 ,  H01M4/134 ,  H01M4/133 ,  H01M4/1395 ,  H01M4/1393 ,  H01M10/0525 ,  H01M4/587 ,  H01M2004/02720130101 ,  H01M4/0421

摘要： A silicon-carbon composite material, a preparation method thereof, an electrochemical device, and an electronic apparatus are provided. The silicon-carbon composite material includes an inner core and a carbon coating layer. The inner core includes a carbon substrate and silicon and carbon nanoparticles attached to a surface of the carbon substrate and/or an inner portion of the carbon substrate. An accessible porosity R is 20% to 80%. The preparation method includes co-depositing, by using a gaseous carbon source/silicon source carbon, carbon and silicon on the carbon substrate through a first chemical vapor deposition and forming, by using a carbon source, the carbon coating layer on a surface through a second chemical vapor deposition.

公开(公告)号：EP4287322A1

公开(公告)日：2023-12-06

申请号：EP21921981.3

申请日：2021-02-08

申请人： AESC Japan Ltd.

发明人： LI, Ruonan ,  SUN, Huayu

IPC分类号： H01M4/62 ,  H01M4/1393

摘要： The present application discloses a binder, a negative-electrode slurry, a negative electrode, and a lithium-ion battery. In the present application, the binder comprises a first block polymer and a second block polymer. The first block polymer is a lithiated tetrablock polymer having a structure shown as B-C-B-A, wherein A represents a polymer block A, B represents a polymer block B, and C represents a polymer block C; the polymer block A is polymerized from alkenyl formic acid monomers; the polymer block B is polymerized from aromatic vinyl monomers; and the polymer block C is polymerized from acrylate monomers. The second block polymer is a lithiated triblock polymer having a structure shown as E-F-E, wherein E represents a polymer block E, and F represents a polymer block F; the polymer block E is polymerized from alkenyl formic acid monomers; and the polymer block F is polymerized from acrylate monomers. The binder provided by the present application has strong ion-conducting capability, simple components, low cost, suitable modulus, and thickening and dispersing effects.

公开(公告)号：EP4439702A1

公开(公告)日：2024-10-02

申请号：EP23218001.8

申请日：2023-12-19

申请人： AESC Japan Ltd.

发明人： SUN, Zhonggui ,  LI, Ruonan ,  HUANG, Peng ,  SUN, Huayu

IPC分类号： H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M4/583 ,  H01M4/02

摘要： The disclosure relates to a negative electrode material, an electrochemical device and an electronic device. The negative electrode material includes: a carbon layer (1); and a silicon layer (2) located on at least part of the surface of the carbon layer (1). The negative electrode material satisfies the following relationship: R

公开(公告)号：EP4439703A1

公开(公告)日：2024-10-02

申请号：EP23208996.1

申请日：2023-11-10

申请人： AESC Japan Ltd.

发明人： HUANG, Peng ,  LI, Ruonan ,  SUN, Zhonggui ,  SUN, Huayu

IPC分类号： H01M4/134 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

CPC分类号： H01M4/386 ,  H01M4/587 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/134 ,  H01M2004/02720130101 ,  H01M4/1393 ,  H01M4/133

摘要： A silicon-carbon composite material, a preparation method thereof, an electrochemical device, and an electronic apparatus are provided. The silicon-carbon composite material includes a carbon substrate, a silicon material attached to a surface of the carbon substrate and/or an inner portion of the carbon substrate, and a nonmetal element doped on the carbon substrate. Covalent bond energy formed by the nonmetal element and a carbon element in is 180 eV ≦ E1 ≦ 700 eV or 130 eV ≦ E2 ≦ 210 eV.

公开(公告)号：EP4287323A1

公开(公告)日：2023-12-06

申请号：EP21921982.1

申请日：2021-02-08

申请人： AESC Japan Ltd.

发明人： LI, Ruonan ,  SUN, Huayu

IPC分类号： H01M4/62 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525

摘要： A binder, a negative electrode slurry, a negative electrode, and a lithium-ion battery. The binder comprises a lithiated block polymer; the lithiated block polymer is a lithiated product of a block polymer having a structure represented by B-C-B-A, wherein A represents a polymer block A, B represents a polymer block B, and C represents a polymer block C; the polymer block A is formed by polymerizing alkenyl formic acid monomers; the polymer block B is formed by polymerizing aromatic vinyl monomers; and the polymer block C is formed by polymerizing acrylate monomers. The binder is strong in ion-conducting capability and better in binding property, so that the peeling strength of the prepared negative electrode is higher, and the lithium-ion battery using the binder has a better rapid charging capability and high and low temperature performance.