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    • 1. 发明申请
    • Abrasive Blasted Conductive Polymer Cathode for Use in a Wet Electrolytic Capacitor
    • 用于湿电解电容器的磨料喷射导电聚合物阴极
    • US20120069492A1
    • 2012-03-22
    • US12883410
    • 2010-09-16
    • Martin BilerJohn GalvagniDirk H. DreissiigZebbie Lynn SebaldFrantisek Priban
    • Martin BilerJohn GalvagniDirk H. DreissiigZebbie Lynn SebaldFrantisek Priban
    • H01G2/10H01G9/145H01G9/00
    • H01G9/0425H01G9/0029H01G9/0036H01G9/028H01G9/048H01G9/055H01G9/06H01G9/145H01G11/32Y02E60/13Y10T29/417
    • A wet electrolytic capacitor that includes a porous anode body containing a dielectric layer, an electrolyte, and a cathode containing a metal substrate that is abrasive blasted is provided. Abrasive blasting may accomplish a variety of different purposes. For example, it may result in a surface that is substantially uniform and macroscopically smooth, thereby increasing the consistency of conductive coatings formed thereon. While possessing a certain degree of smoothness, the abrasive blasted surface is nevertheless micro-roughened so that it contains a plurality of pits. The pits provide an increased surface area, thereby allowing for increased cathode capacitance for a given size and/or capacitors with a reduced size for a given capacitance. A conductive coating that contains a substituted polythiophene is disposed on the micro-roughened surface. The presence of the pits on the substrate enhances the degree of contact between the conductive coating and metal substrate, thereby resulting in improved mechanical robustness and electrical performance (e.g., reduced equivalent series resistance and leakage current).
    • 提供一种湿电解电容器,其包括含有电介质层的多孔阳极体,电解质和含有被喷砂处理的金属基板的阴极。 磨料喷砂可以实现各种不同的目的。 例如,可能导致表面基本均匀且宏观地平滑,从而增加其上形成的导电涂层的稠度。 在具有一定程度的平滑度的同时,喷砂表面仍然是微粗糙化的,使得它包含多个凹坑。 凹坑提供了增加的表面积,从而允许给定尺寸的阴极电容增加和/或给定电容的尺寸减小的电容器。 包含取代的聚噻吩的导电涂层设置在微粗糙表面上。 在衬底上存在凹坑增加了导电涂层和金属衬底之间的接触程度,从而导致改进的机械稳健性和电性能(例如,降低的等效串联电阻和漏电流)。