公开(公告)号：US20240356158A1

公开(公告)日：2024-10-24

申请号：US18759062

申请日：2024-06-28

申请人： SHENZHEN SENIOR TECHNOLOGY MATERIAL CO., LTD.

发明人： Yanjie WANG ,  Zelin CHEN ,  Hua SUN ,  Jianqiang SHEN ,  Bin TAN

IPC分类号： H01M50/446 ,  C08K3/22 ,  C08K3/32 ,  C08K7/02 ,  C09D129/04 ,  C09D133/02 ,  H01M50/403 ,  H01M50/42 ,  H01M50/434 ,  H01M50/449

CPC分类号： H01M50/446 ,  C09D129/04 ,  C09D133/02 ,  H01M50/403 ,  H01M50/42 ,  H01M50/434 ,  H01M50/449 ,  C08K2003/2227 ,  C08K2003/325 ,  C08K7/02 ,  C08K2201/003 ,  C08K2201/005

摘要： The present disclosure provides a coating for battery separator, a preparation method thereof, a battery separator and a battery, where a coating slurry of the coating for the battery separator includes a dispersion medium, a nanomaterial, and a polymer containing polar functional groups; the coating has a surface pore size of 10 nm-30 nm, and a surface roughness of 200 nm-500 nm, and the coating has a hydroxyl content of 100 mg KOH/g-4000 mg KOH/g. The coating for battery separator, the preparation method thereof, the battery separator and the battery can solve a problem of deformation of battery separators due to the induction of electrolyte solutions.

公开(公告)号：US20210280947A1

公开(公告)日：2021-09-09

申请号：US17255809

申请日：2019-05-23

申请人： SHENZHEN SENIOR TECHNOLOGY MATERIAL CO., LTD. ,  JIANGSU SENIOR NEW MATERIAL TECHNOLOGY CO., LTD

发明人： Yanjie WANG ,  Zhijie WU ,  Bin TAN ,  Li CHEN

IPC分类号： H01M50/454 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/491 ,  H01M50/417

摘要： Disclosed are a coating liquid of a lithium ion battery separator, a lithium ion battery separator, and a lithium ion battery. The raw materials of the coating liquid include a nanowire, ceramic powder, an adhesive, and a solvent; the nanowire is at least one of nano cellulose, carbon nanotube, silver nanowire, boron carbide nanowire, copper hydroxide nanowire, aramid nano fiber, silicon monoxide nanowire, and hydroxyapatite nanowire; the diameter of the nanowire is 1-100 nm, and the length is 0.1-100 μm. The lithium ion battery separator consisting of a separator body and a coating layer loaded on the separator body is obtained by applying the coating liquid that is obtained by mixing the nanowire, the ceramic powder, the adhesive and the like onto the surface of the separator body, and performing curing; the lithium ion battery has good thermal stability and puncture resistance, etc.