发明名称 |
Organic/inorganic composite separator having morphology gradient, manufacturing method thereof and electrochemical device containing the same |
摘要 |
Disclosed is an organic/inorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The organic/inorganic composite separator of the present invention may be useful to enhance peeling and scratch resistances and improve a lamination characteristic by introducing a porous active layer onto a porous substrate having pores, the porous active layer having heterogeneity of morphology toward a thickness direction in which a content ratio of the binder polymer/inorganic particles present in a surface layer is higher than that of the binder polymer/inorganic particles present inside the surface layer. Accordingly, the stability and performances of a battery can be improved together since the detachment of inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.
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申请公布号 |
US7638241(B2) |
申请公布日期 |
2009.12.29 |
申请号 |
US20060997948 |
申请日期 |
2006.12.06 |
申请人 |
LG CHEM, LTD. |
发明人 |
LEE SANG-YOUNG;SEO DAE-JONG;SOHN JOON-YONG;KIM SEOK-KOO;HONG JANG-HYUK;KIM YOUNG-SOO;JANG HYUN-MIN |
分类号 |
H01M2/16;H01M2/14 |
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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