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High density capacitor

  • US 8,830,656 B2
  • Filed: 05/31/2011
  • Issued: 09/09/2014
  • Est. Priority Date: 06/01/2010
  • Status: Active Grant
First Claim
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1. An electrochemical capacitor, comprising:

  • a substrate;

    a diffusion barrier layer positioned over the substrate;

    a cathode positioned over the diffusion barrier layer;

    an anode positioned over the cathode;

    and an electrolyte allowing migration of metal ions between the anode and the cathode;

    wherein the electrolyte is an amorphous solid state electrolyte; and

    at least one of the anode and the cathode has multiple, non discrete oxidation states having a broad, continuous distribution of redox potentials, wherein the at least one of the anode and the cathode is made of an oxide containing three different metals.

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