High performance electrochemichromic solutions and devices thereof

  • US 5,140,455 A
  • Filed: 11/29/1989
  • Issued: 08/18/1992
  • Est. Priority Date: 11/29/1989
  • Status: Expired due to Fees
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First Claim
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1. An electrochemichromic cell comprising:

  • spaced plates, each having an inwardly facing conductive surface;

    an electrochemichromic solution in said cell, between said spaced plates, said solution comprising;


    a redox chemical pair in solution in said solvent which colors in the presence of an applied voltage and which bleaches to a colorless condition in the absence of an applied voltage;

    said solvent including at least 25% by volume of a solvent selected from the group consisting of;

    3-hydroxypropionitrile (HPN), 3,3-oxydipropionitrile (ODPN),2-acetylbutyrolactone (ABL), 2-methylglutaronitrile (MGNT), and mixtures thereof.

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