Patent ID: 6447555
Filing Date: 2002-09-10
Classification: H01G,Y02E,Y02T

Abstract:
A method of fabricating an electric double-layer capacitor having positive and negative polarizing electrodes and aluminum collector electrodes for transferring electric charge to and from said polarizing electrodes, said polarizing electrodes consisting mainly of activated carbon forming an electric double layer, each of said aluminum collector electrodes having an oxide film thereupon, said method comprising the steps of:placing said polarizing electrodes in an electrolyte and separating said polarizing electrodes by a separator; causing granular carbon having sufficient hardness to penetrate an aluminum oxide film to penetrate through said oxide films into said aluminum collector electrodes; and bringing said aluminum collector electrodes into contact with said polarizing electrodes via said granular carbon, and wherein said step of causing said granular carbon to penetrate through said oxide films into said aluminum collector electrodes consists of adding a binder and a solvent to the granular carbon to form a mixture, applying said mixture to the surfaces of said aluminum collector electrodes, drying said mixture, and rolling said mixture.