发明名称 |
Electrolyte for electrolytic capacitor, electrolytic capacitor and process for producing tetrafluoroaluminate salt of organic onium |
摘要 |
There are provided an aluminum electrolytic capacitor comprising an anode, a cathode comprising aluminum and an electrolytic solution containing an onium salt of fluorine-containing anion, wherein the electrolytic solution has a water concentration of 1% by weight or less, or wherein the cathode has a peak top of Al2p spectrum of 74.0 to 75.8 eV as measured by a method in which the surface of the cathode in the aluminum electrolytic capacitor heated at 125° C. for 50 hours is analyzed by X-ray photoelectron spectroscopy (XPS); an electrolytic solution for electrolytic capacitor comprising a quaternary cyclic amidinium tetrafluoroaluminate and a solvent and containing specific impurity compounds in a total amount of 0.6% by weight or less, and an electrolytic capacitor using the electrolytic solution; and a method for preparing an organic onium tetrafluoroaluminate which is advantageously used in an aluminum electrolytic capacitor. |
申请公布号 |
US7227738(B2) |
申请公布日期 |
2007.06.05 |
申请号 |
US20050533234 |
申请日期 |
2005.04.29 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
TAKEDA MASAYUKI;MIYAUCHI HIROO;UE MAKOTO |
分类号 |
H01G9/00;H01G9/02;H01G9/028;H01G9/035;H01G9/04;H01G9/145 |
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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