Manganese oxide capacitor for use in extreme environments

摘要

A capacitor assembly for use in high voltage and high temperature environments is provided. More particularly, the capacitor assembly includes a capacitor element containing an anodically oxidized porous, sintered body that is coated with a manganese oxide solid electrolyte. To help facilitate the use of the capacitor assembly in high voltage (e.g., above about 35 volts) and high temperature (e.g., above about 175° C.) applications, the capacitor element is enclosed and hermetically sealed within a housing in the presence of a gaseous atmosphere that contains an inert gas.

主权项

1. A capacitor assembly comprising:
a capacitor element comprising an anode formed from an anodically oxidized, sintered porous body and a solid electrolyte coating the anode, wherein the solid electrolyte comprises a manganese oxide; a housing that defines an interior cavity within which the capacitor element is positioned, wherein the interior cavity has a gaseous atmosphere that contains an inert gas; a polymeric restraint that is in contact with a surface of the capacitor element, wherein at least about 5% of the interior cavity of the housing remains unoccupied by the capacitor element and the polymeric restraint; an anode termination that is in electrical connection with the anode body; and a cathode termination that is in electrical connection with the solid electrolyte.