Non-symmetric capacitor with aluminum cathode current collector

A capacitor of the type having a cathode and an anode and an electrolyte disposed between the cathode and the anode, the capacitor comprising an electrochemical cathode comprising an aluminum current collector coated with a finely divided material, an electrolytic anode comprising aluminum coated with aluminum oxide, an electrolyte in contact with the finely divided material on the cathode and the aluminum oxide on the anode.