Patent ID: 6451073
Filing Date: 2002-09-17
Classification: H01G,Y02E,Y10T

Abstract:
A method of making a double layer capacitor comprising:impregnating each of a plurality of carbon cloths with a metal; forming a plurality of current collector foils, each of the plurality of current collector foils having a tab portion and a paddle portion; bonding the tab portion of each of one half of the plurality of current collector foils to each other and to a first capacitor terminal, thereby forming a first plurality of bonded current collector foils; bonding the tab portion of each of another half of the plurality of current collector foils to each other and to a second capacitor terminal, thereby forming a second plurality of bonded current collector foils; forming, respectively, a first plurality of electrodes and a second plurality of electrodes by positioning respective ones of the plurality of metal impregnated carbon cloths against respective paddle portions of each of the first plurality of bonded current collector foils and respective others of the plurality of metal impregnated carbon cloths against respective paddle portions of each of the second plurality of bonded current collector foils, wherein each of the first and second plurality of electrodes comprises one of the plurality of bonded current collector foils and one of the plurality of metal impregnated carbon cloths; interleaving the first plurality of electrodes and the second plurality of electrodes, thereby forming an interleaved electrode stack; interposing a respective porous separator portion between each of said first plurality of electrodes and each of said second plurality of electrodes, wherein the respective porous separator portion is positioned between each of the first plurality of electrodes and the second plurality of electrodes wherein porous separator material electrically insulates adjacent ones of the ,first plurality of electrodes and the second plurality of electrodes for preventing electrical shorting against each other; and saturating the interleaved electrode stack with an electrolytic solution.