发明名称 |
ELECTRODE FOR LITHIUM ION RECHARGEABLE BATTERY |
摘要 |
This invention provides an electrode for a lithium ion rechargeable battery that, even when exposed to severe conditions, for example, in a nail piercing test or a collapse test, can ensure a high level of safety and also has excellent output characteristics. Specifically, there is provided an electrode for a lithium ion rechargeable battery, comprising a mixture containing active material particles, which can reversibly occlude and release lithium, and a current collector for supporting the mixture, wherein the surface of the current collector has a concave part, and not less than 30% of the mixture support area of the current collector is accounted for by the concave part. There is also provided an electrode for a lithium ion rechargeable battery in which, in a cross section formed by simultaneously cutting a mixture and a current collector perpendicularly to the electrode face, the maximum depth of the concave part is not less than 1 µm, or the difference between the average thickness of the current collector and the maximum thickness of the current collector is not less than 0.35 µm. |
申请公布号 |
WO2007013375(A1) |
申请公布日期 |
2007.02.01 |
申请号 |
WO2006JP314503 |
申请日期 |
2006.07.21 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;NISHINO, HAJIME;TSUTSUMI, SHUJI;KASAMATSU, SHINJI;TAKEZAWA, HIDEHARU;SHIMADA, MIKINARI |
发明人 |
NISHINO, HAJIME;TSUTSUMI, SHUJI;KASAMATSU, SHINJI;TAKEZAWA, HIDEHARU;SHIMADA, MIKINARI |
分类号 |
H01M4/70;H01M10/0525;H01M10/36 |
主分类号 |
H01M4/70 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|