Electrochromic polyelectrolyte gel medium having improved creep resistance and associated electrochromic device

  • US 8,928,966 B1
  • Filed: 08/07/2013
  • Issued: 01/06/2015
  • Est. Priority Date: 08/08/2012
  • Status: Active Grant
First Claim
Patent Images

1. An electrochromic device, comprising:

  • a first substantially transparent substrate having an electrically conductive material associated therewith;

    a second substrate having an electrically conductive material associated therewith; and

    an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises;

    at least one solvent;

    at least one anodic electroactive material;

    at least one cathodic electroactive material;

    wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and

    a crosslinked polyelectrolyte gel matrix, wherein the crosslinked polyelectrolyte gel matrix increases creep resistance of the electrochromic medium relative to a non-charged gel matrix at the same concentration.

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