Supercapacitor with high energy density
First Claim
1. A high energy-density supercapacitor, comprising:
- an anode;
a cathode;
at least one bipolar electrode interposed between the anode and the cathode;
a plurality of separators disposed after the anode, the cathode and the at least one bipolar electrode, respectively; and
an electrolyte impregnating the separators, wherein the anode, the cathode, the at least one bipolar electrode and the separators are spirally wound to form a jelly roll with an electric lead attached to the anode and a separate electric lead attached to the cathode, wherein the jelly roll is sealed at starting ends of all electrodes and separators, at very ends of all electrodes and separators, at a top of the jelly roll, as well as at a bottom of the jelly roll using a curable polymer.
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Accused Products
Abstract
The energy content of supercapacitor is determined by its capacitance value and working voltage. To attain a high capacitance and a high voltage, several pieces of electrodes and separators are spirally wound with edge sealing to form a bipolar supercapacitor in cylindrical, oval or square configuration. While the winding operation effectively provides a large surface area for high capacitance, the bipolar packaging instantly imparts a unitary roll a minimum working voltage of 5V on using an organic electrolyte. The bipolar roll is a powerful building block for facilitating the assembly of supercapacitor modules. Using containers with multiple compartments, as many bipolar rolls can be connected in series, in parallel or in a combination of the two connections to fabricate integrated supercapacitors with high energy density as required by applications.
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Citations
20 Claims
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1. A high energy-density supercapacitor, comprising:
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an anode;
a cathode;
at least one bipolar electrode interposed between the anode and the cathode;
a plurality of separators disposed after the anode, the cathode and the at least one bipolar electrode, respectively; and
an electrolyte impregnating the separators, wherein the anode, the cathode, the at least one bipolar electrode and the separators are spirally wound to form a jelly roll with an electric lead attached to the anode and a separate electric lead attached to the cathode, wherein the jelly roll is sealed at starting ends of all electrodes and separators, at very ends of all electrodes and separators, at a top of the jelly roll, as well as at a bottom of the jelly roll using a curable polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
a plurality of said jelly rolls; and
a multiple-compartment container for containing the jelly rolls, wherein each jelly roll is disposed in a compartment of the multiple-compartment container for series connection, parallel connection or a combination of the two.
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10. A high energy-density supercapacitor, comprising:
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a plurality of capacitor rolls, each comprising an anode;
a cathode;
a bipolar electrode;
a plurality of separators disposed after the anode, the cathode and the bipolar electrode, respectively; and
an electrolyte impregnating the separators, wherein the anode, the cathode, the bipolar electrode and the separators are spirally wound to form a jelly roll with an electric lead attached to the anode and a separate electric lead attached to the cathode; and
a multiple-compartment container for containing the jelly rolls, wherein each jelly roll is disposed in a compartment of the multiple-compartment container for series connection, parallel connection or a combination of the two. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification