Patent ID: 6514296
Filing Date: 2003-02-04
Classification: H01G,H01M,Y02E,Y02P

Abstract:
A method for making a dry preunit for a capacitor, including forming at least a first cell, comprising the steps of:(a) providing a first electrically conductive electrode and a second electrically conductive electrode; (b) forming on one surface of said first electrically conductive electrode a first porous electrically conductive coating layer; (c) forming on said first porous electrically conductive coating layer a plurality of protrusions; (d) disposing said first electrically conductive electrode and said second electrically conductive electrode in spaced-apart relationship to one another; (e) interposing, between said spaced-apart first and second electrically conductive electrodes, a first dielectric gasket having a centrally located opening, for separating and electrically insulating said first and second electrically conductive electrodes; wherein said first porous electrically conductive coating layer with protrusions formed thereon is interposed between said first electrically conductive electrode and said first dielectric gasket, and whereby, when said first electrically conductive electrode, said second electrically conductive electrode, and said first gasket are bonded together to form said first cell, an air-filled fill gap is formed in said first cell.