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HIGH PERFORMANCE ULTRACAPACITORS WITH CARBON NANOMATERIALS AND IONIC LIQUIDS

  • US 20080192407A1
  • Filed: 08/01/2007
  • Published: 08/14/2008
  • Est. Priority Date: 08/02/2006
  • Status: Active Grant
First Claim
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1. An ultracapacitor, comprising:

  • (a) first and second electrodes, the first and second oppositely charged electrodes primarily comprising carbon nanotubes; and

    (b) an electrolyte material, comprising oppositely charged ions, in contact with first ends of the first and second electrodes, wherein at least most of the first ends of the carbon nanotubes are open to permit the ions to access interior surfaces of the nanotubes, wherein the sizes of the ions are less than interior diameters of the carbon nanotubes.

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