Color-stabilized electrochromic devices
First Claim
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1. An electrochromic medium for use in a normally operating electrochromic device, comprising:
- (a) an anodic material and a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; and
(b) a color-stabilizing additive, wherein the color-stabilizing additive is more easily reduced than the cathodic material, and wherein the color-stabilizing additive is not strongly colored.
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Abstract
An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive.
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Citations
30 Claims
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1. An electrochromic medium for use in a normally operating electrochromic device, comprising:
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(a) an anodic material and a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; and
(b) a color-stabilizing additive, wherein the color-stabilizing additive is more easily reduced than the cathodic material, and wherein the color-stabilizing additive is not strongly colored. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 25, 26, 27, 28, 29, 30)
at least one substantially transparent substrate; and
an electrochromic medium according to claims 1 or 14 associated with the at least one substantially transparent substrate.
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26. The electrochromic device according to claim 25, comprising a first substantially transparent substrate and a second substrate.
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27. The electrochromic device according to claim 26, wherein the device is an electrochromic window.
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28. The electrochromic device according to claim 26, wherein the second substrate is plated with a reflective material.
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29. The electrochromic device according to claim 28, wherein the reflective material is selected from the group comprising chromium, rhodium, silver, alloys of the same, and mixtures thereof.
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30. The electrochromic device according to claim 29, wherein the device is an electrochromic mirror.
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14. An electrochromic medium for use in a normally operating electrochromic device, comprising:
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(a) an anodic material and a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; and
(b) a color-stabilizing additive, wherein the color-stabilizing additive is more easily oxidized than the anodic material, and wherein the color-stabilizing additive is not strongly colored. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification