Abstract: This invention relates to a large capacitor for accumulating electrical energy. In particular, to a capacitor with a double electric layer comprising an electrolyte; at least one pair of electrolyte impregnated electrodes which are elastically compressible and independently, mechanically stable; and a separator also impregnated with electrolyte for being in between and in contact with both of the at least one pair of electrolytic impregnated electrodes for ionic conductance but electronically separating the electrodes; at least one pair of electrolytes impermeable and electrolyte inert current collectors in contact respectively with the at least one pair of the electrolyte impregnated electrodes; and an insulating gasket for separating the electrolyte impermeable and electrolytic inert collectors.In at least some embodiments of this capacitor, the electrolytic impregnated electrodes are composed of various forms of carbon particles in combination with porous elastic dielectrics and polymer binders.

Abstract: This invention relates to a capacitor with cells of a double electric layer comprising of a case of dielectric material for accommodating a stack of capacitor cells having a double electric layer with electrolyte therein and having been compressed together in a stack, and further having at least two current collector plates connected to the stack of capacitor cells for collecting current, and; at least two current feeders connected to the at least two current collector plates for feeding current there through, at least two platens of dielectric material for insulation of said stack of capacitor cells and for providing impermeability to an electrolyte and are inert thereto, at least two strength plates having the stack of capacitor cells therebetween, and a flexible brace member connected between said at least two strength plates for retaining and holding said stack of capacitor cells in a compressed stack.