| 发明名称 |
SEPARATOR MEDIA FOR ELECTROCHEMICAL CELLS |
| 摘要 |
A separator medium for electrochemical cells that contains at least one nonwoven sheet of polymeric fibers. The nonwoven sheet has a surface area of about 0.5 to about 1.5 m2/g and has a maximum pore size that is equal to or more than 2.5 times the mean flow pore size and more than 11 times the minimum pore size. The sheet may be sulfonated to a level of 0.67% and demonstrates superior tensile properties after sulfonation and relative to previously known separators. |
| 申请公布号 |
US2016276640(A1) |
申请公布日期 |
2016.09.22 |
| 申请号 |
US201314442412 |
申请日期 |
2013.11.08 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
Lim Hyun Sung;Arora Pankaj |
| 分类号 |
H01M2/16;D04H1/724;H01M6/04;H01M2/14;H01M10/26 |
主分类号 |
H01M2/16 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A separator medium for electrochemical cells comprising at least one nonwoven sheet comprising polymeric fibers, wherein the nonwoven sheet has a surface area of 0.5 to 1.5 m2/g and the separator retains at least 70% of its machine direction (MD) tensile strength relative to the medium when it is not subjected to sulfonation. |
| 地址 |
Wilmington DE US |
