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发明授权
US07295424B2 Electrolyte for electrolytic capacitor, electrolytic capacitor and process for producing tetrafluoroaluminate salt of organic onium 有权
电解电容器电解液，电解电容器及生产有机鎓四氟铝酸盐的工艺

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.
摘要（中）：

提供一种铝电解电容器，其包含阳极，包含铝的阴极和含有含氟阴离子的鎓盐的电解液，其中所述电解液的水浓度为1重量％以下，或者其中所述阴极具有 通过X射线光电子能谱（XPS）分析通过铝电解电容器中的阴极表面在125℃加热50小时的方法测量的74.0至75.8eV的Al2p光谱峰顶。 一种电解电容器用电解液，其含有四环四氟铝酸四烷基酯和溶剂，并含有0.6重量％以下的特定杂质化合物，以及使用该电解液的电解电容器。 以及有利地用于铝电解电容器中的四氟铝酸有机鎓的制备方法。

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