发明名称 |
Anodic electrode for electrolytic capacitor and process of producing the same |
摘要 |
<p>This invention provides an anodic electrode for an electrolytic capacitor having high capacitance with low-resistance properties at high frequencies and is capable of carrying large current, and a process of producing the same. Such an anodic electrode for electrolytic capacitor includes a porous body that have micropores to be formed with dielectric layer therein and to be filled with electrolyte therein, wherein the porous body includes a laminate of a plurality of sinter layers having the micropores formed from valve metal particles. The laminate includes multilaminarly smaller micropore-size regions and larger micropore-size regions to form electric conductive passages between the smaller micropore-size regions and side surfaces of the porous body to reduce resistance of the capacitor and also increase capacitance by utilizing the smaller micropores-size regions for capacitor effectively. The porous body is formed by stacking a plurality of porous preforms such as sheets preformed of valve metal powder into a laminate, and then sintering the laminate. The porous body may be joined with a valve metal substrate during sintering, thereby completing the anodic electrode for an electrolytic capacitor. Particularly, the porous body may be a laminate including large micropore-size sinter layers and small micropore size sinter layers, by alternatively laminating two types of preforms different in its density. <IMAGE> <IMAGE></p> |
申请公布号 |
EP1045410(A2) |
申请公布日期 |
2000.10.18 |
申请号 |
EP20000107863 |
申请日期 |
2000.04.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOSHIDA, TSUNENORI;HOSHINO, KENJI;TANAHASHI, MASAKAZU;HIGUCHI, YOSHIHIRO |
分类号 |
H01G9/00;H01G9/04;H01G9/042;H01G9/048;H01G9/052;(IPC1-7):H01G9/052 |
主分类号 |
H01G9/00 |
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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