Coated housing for ultracapacitor
First Claim
Patent Images
1. An ultracapacitor comprising:
- a positive electrode;
a negative electrode;
a separator positioned between the positive electrode and the negative electrode;
an electrolyte in ionic contact with the positive electrode and the negative electrode; and
a housing component to retain the positive electrode, the negative electrode, the separator and the electrolyte, wherein the housing component comprises an inner surface having a coating,wherein the ultracapacitor is configured to operate at 3 volts or greater at 65°
C. and maintain greater than 80% of its initial capacitance for over 1500 hours.
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Abstract
An electric double-layer ultracapacitor configured to maintain desired operation at an operating voltage of three volts, where the capacitor includes a housing component, a first and a second current collector, a positive and a negative electrode electrically coupled to one of the first and second current collectors, and a separator positioned between the positive and the negative electrode. The capacitor may also include a protective coating disposed on an inner surface of the housing for the ultracapacitor.
16 Citations
21 Claims
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1. An ultracapacitor comprising:
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a positive electrode; a negative electrode; a separator positioned between the positive electrode and the negative electrode; an electrolyte in ionic contact with the positive electrode and the negative electrode; and a housing component to retain the positive electrode, the negative electrode, the separator and the electrolyte, wherein the housing component comprises an inner surface having a coating, wherein the ultracapacitor is configured to operate at 3 volts or greater at 65°
C. and maintain greater than 80% of its initial capacitance for over 1500 hours. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. An ultracapacitor comprising:
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a positive electrode; a negative electrode; a separator positioned between the positive electrode and the negative electrode; an electrolyte in ionic contact with the positive electrode and the negative electrode; and a housing component to retain the positive electrode, the negative electrode, the separator and the electrolyte, wherein the housing component comprises an inner surface having a coating, wherein the ultracapacitor is configured to operate at 3 volts or greater at 65°
C. and maintain less than 200% of its initial equivalent series resistance for over 1500 hours. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification