Energy storage devices

  • US 9,412,998 B2
  • Filed: 12/21/2012
  • Issued: 08/09/2016
  • Est. Priority Date: 02/25/2009
  • Status: Active Grant
First Claim
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1. An energy storage system comprising:

  • a conductive substrate;

    a plurality of carbon nanofibers on the substrate, the carbon nanofibers including a plurality of multi-walled carbon nanotubes;

    an electrolyte including one or more charge carriers, wherein the carbon nanofibers include a stacked-cone structure; and

    a layer of intercalation material on the carbon nanofibers, the layer of intercalation material having a structure resulting from the stacked-cone structure.

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