Patent ID: 8451582

Claim:
A capacitor including a capacitor foil, said capacitor foil comprising: a chemically etched metallic foil; a conformal and substantially uniform dielectric layer formed over a first portion of said chemically etched metallic foil; and further comprising an electrolyte in electrical contact with said dielectric layer and an electrical bias system for applying an electrical potential between said chemically etched metallic foil and said electrolyte; and said electrical potential is selected to increase the breakdown voltage of said dielectric layer without substantially increasing the thickness of said dielectric layer; a substantially uniform and conformal first conductive film formed over said dielectric layer; wherein a second portion of said chemically etched metallic foil is not covered with said dielectric layer; and said conformal conductive film is electrically insulated from said portion of said chemically etched foil that is not covered with said dielectric layer.