Aqueous-based electric double-layer capacitor
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United States of America Patent
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Nov 17, 2015
Grant Date -
Feb 19, 2015
app pub date -
Mar 13, 2013
filing date -
Mar 18, 2012
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Abstract
An electric double-layer capacitor (EDLC) and method for manufacturing thereof. The ELDC includes at least one capacitor cell with two parallel current collectors, two opposite polarity electrodes, a separator, a rigid dielectric frame, and at least one evacuation mechanism. Each electrode is disposed on a respective current collector, and impregnated with aqueous electrolyte. The frame is disposed along the perimeter on the surface of a current collector and enclosing the electrodes. The evacuation mechanism removes superfluous fluid material from the capacitor cell interior. The evacuation mechanism may be a compartment in the frame, operative to collect residual electrolyte that seeps out from the electrodes, or a capillary formed within the frame and extending into a portion of the electrode, the capillary composed of a porous hydrophobic material and operative to evacuate discharged gases from the electrodes out of the EDLC.
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