发明名称 |
Secondary battery and method for producing the same |
摘要 |
In a secondary battery including a positive electrode, a negative electrode and a porous film bonded to the surface of at least one of the positive electrode and the negative electrode, the porous film includes ceramic particles and a binder, and the ceramic particles include polycrystalline particles obtained by mechanically crushing a fired material comprising a ceramic that is directly synthesized from a ceramic precursor. The porous film has a porosity of 40 to 80%, for example. The porous film can be formed by a method including the steps of: obtaining a fired material comprising a ceramic from a ceramic precursor; obtaining ceramic particles by mechanically crushing the fired material of the ceramic; obtaining a slurry including the ceramic particles and a binder; and applying the slurry onto the surface of an electrode, followed by drying.
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申请公布号 |
US7402184(B2) |
申请公布日期 |
2008.07.22 |
申请号 |
US20070655164 |
申请日期 |
2007.01.19 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
IKUTA SHIGEO;FUKUMOTO YUSUKE |
分类号 |
H01M2/16;C04B41/87;H01M4/131;H01M4/133;H01M4/24;H01M4/48;H01M10/04;H01M10/052;H01M10/0525;H01M10/24;H01M10/36 |
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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