| 发明名称 | Porous membrane for secondary battery, production method therefor, and use thereof | ||
| 摘要 | A porous membrane for a secondary battery including non-electroconductive particles and a binder for a porous membrane, wherein the non-electroconductive particles are particles of a polymer, an arithmetic mean value of a shape factor of the non-electroconductive particles is 1.05 to 1.60, a variation coefficient of the shape factor is 16% or less, and a variation coefficient of a particle diameter of the non-electroconductive particles is 26% or less; manufacturing method thereof; and an electrode, a separator and a battery having the same. | ||
| 申请公布号 | US9496532(B2) | 申请公布日期 | 2016.11.15 |
| 申请号 | US201113814522 | 申请日期 | 2011.08.08 |
| 申请人 | ZEON CORPORATION | 发明人 | Kaneda Takuya;Kobayashi Osamu |
| 分类号 | H01M2/16;H01M4/64;H01M2/14 | 主分类号 | H01M2/16 |
| 代理机构 | Birch, Stewart, Kolasch & Birch, LLP | 代理人 | Birch, Stewart, Kolasch & Birch, LLP |
| 主权项 | 1. A porous membrane for a secondary battery comprising non-electroconductive particles and a binder for a porous membrane, wherein: the non-electroconductive particles are particles of a polymer, an arithmetic mean value of a shape factor of the non-electroconductive particles is 1.05 to 1.60, a variation coefficient of the shape factor is 16% or less, a variation coefficient of a particle diameter of the non-electroconductive particles is 26% or less, the binder for the porous membrane is a (meth)acrylic polymer, a content ratio of a polymerization unit of a (meth)acrylate ester monomer in the (meth)acrylic polymer is 50% to 98% by weight, a number mean particle diameter of the binder for the porous membrane is 70 to 400 nm, and a content ratio of the (meth)acrylic polymer in the porous membrane for the secondary battery is 3% to 20% by weight. | ||
| 地址 | Tokyo JP | ||