Abstract: The present invention relates to a high-voltage electric double layer capacitor (EDLC), and more particularly, to an EDLC in which a surge voltage and an operating voltage are enhanced by improving the structure of a unit cell. The EDLC according to the present invention includes a unit cell having at least three electrodes. According to a preferred embodiment of the present invention, the unit cell has a structure constructed by sequentially laminating a first insulating paper layer with a sheet of insulating paper, a first electrode layer with at least two electrodes, a second insulating paper layer with a sheet of insulating paper, and a second electrode layer with at least one electrode. In accordance with the present invention, the number of electrode-facing surfaces increases, and a surge voltage and an operating voltage increase in proportion to the increased number of the electrode-facing surfaces, resulting in a high energy storage density.

Abstract: The present invention relates to a high-voltage electric double layer capacitor (EDLC), and more particularly, to an EDLC in which a surge voltage and an operating voltage are enhanced by improving the structure of a unit cell. The EDLC according to the present invention includes a unit cell having at least three electrodes. According to a preferred embodiment of the present invention, the unit cell has a structure constructed by sequentially laminating a first insulating paper layer with a sheet of insulating paper, a first electrode layer with at least two electrodes, a second insulating paper layer with a sheet of insulating paper, and a second electrode layer with at least one electrode. In accordance with the present invention, the number of electrode-facing surfaces increases, and a surge voltage and an operating voltage increase in proportion to the increased number of the electrode-facing surfaces, resulting in a high energy storage density.

Abstract: Provided is a super electrochemical capacitor including two electrode plates having the same size but different quantities of electric charges or electric charge densities without increasing the volume of the capacitor to increase the quantity of electric charges, capacitance and usable voltage range of the capacitor, to thereby obtain high voltage and super capacitance. The super electrochemical capacitor includes two electrode plates having different quantities of electric charges and similar sizes. The two electrode plates are spaced apart from each other by a dielectric layer or collector layer. The two electrode plates have different quantities of electric charges or electric charge densities while maintaining the sizes thereof. The two electrode plates have different porosities or bulk densities such that the electrode plates have different quantities of electric charges or electric charge densities.

Abstract: Provided is a super electrochemical capacitor including two electrode plates having the same size but different quantities of electric charges or electric charge densities without increasing the volume of the capacitor to increase the quantity of electric charges, capacitance and usable voltage range of the capacitor, to thereby obtain high voltage and super capacitance. The super electrochemical capacitor includes two electrode plates having different quantities of electric charges and similar sizes. The two electrode plates are spaced apart from each other by a dielectric layer or collector layer. The two electrode plates have different quantities of electric charges or electric charge densities while maintaining the sizes thereof. The two electrode plates have different porosities or bulk densities such that the electrode plates have different quantities of electric charges or electric charge densities.