发明名称 |
POROUS MEMBRANE FOR SECONDARY BATTERY, AND SECONDARY BATTERY |
摘要 |
Disclosed is a porous membrane for a secondary battery, which has further improved output characteristics and long-term cycle characteristics when compared with conventional porous membranes. The porous membrane for a secondary battery is used for a lithium ion secondary battery or the like. Specifically disclosed is a porous membrane for a secondary battery, which contains polymer particles A that have a number average particle diameter of 0.4 µm or more but less than 10 µm and a glass transition temperature of 65°C or more and polymer particles B that have a number average particle diameter of 0.04 µm or more but less than 0.3 µm and a glass transition temperature of 15°C or less. It is preferable that the polymer particles B have a crystallization degree of 40% or less and a main chain structure that is composed of a saturated structure. |
申请公布号 |
EP2485295(A4) |
申请公布日期 |
2014.05.21 |
申请号 |
EP20100820677 |
申请日期 |
2010.09.30 |
申请人 |
ZEON CORPORATION |
发明人 |
WAKIZAKA, YASUHIRO;YOSHIDA, NAOKI |
分类号 |
H01M2/16;H01M2/14;H01M4/02;H01M4/13;H01M10/052 |
主分类号 |
H01M2/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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