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

  • US 9,500,927 B2
  • Filed: 04/18/2016
  • Issued: 11/22/2016
  • Est. Priority Date: 08/08/2012
  • Status: Active Grant
First Claim
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1. An electrochromic medium comprising:

  • a cross-linked polyelectrolyte gel matrix comprising;

    a polymeric backbone comprising first ionic groups of a same polarity;

    counterions with opposite polarity to the first ionic groups; and

    a crosslinking moiety;

    wherein the first ionic groups are selected from a group consisting of viologen moieties, ammonium moieties, one or more pyridinium groups and one or more imidazolium groups.

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