Energy storage device

A dry preunit for an energy storage device comprising:

• a. a first electrically conductive electrode;
• b. a second electrically conductive electrode, said first and second electrodes being spaced apart by a first predetermined distance;
• c. first dielectric gasket means interposed between said first and second electrodes, for separating and electrically insulating said first and second electrodes;
• d. a first high surface area electrically conducting coating layer formed on one surface of said first electrode, such that said first coating layer is interposed between said first electrode and said gasket means;
• e. a second electrically conducting high surface area coating layer formed on one surface of said second electrode, such that said second coating layer is interposed between said second electrode and said first gasket means;
• and
• f. a plurality of protrusions on the first coating layer, the second coating layer, or combination thereof and said protrusions impart structural support to said first cell, and provide additional electrical insulation between said first and second electrodes
• whereby, when said first electrode, said second electrode and said first gasket means having a centrally located opening are bonded together to form said first cell, an air filled fill gap is formed therebetween.

A capacitor preunit including at least a first cell, the capacitor comprising:

• a. a first electrically conductive electrode;
• b. a second electrically conductive electrode, said first and second electrodes being bonded together to form a first cell and being spaced apart by a first predetermined distance;
• and
• c. first dielectric peripheral gasket means interposed between said first and second electrodes, for separating and electrically insulating said first and second electrodes;
• a fill gap formed between said first and second electrodes;
• and
• a first fill port formed by said gasket means in order to allow an electrolyte to flow into said fill gap.