ELECTROCHROMIC ELEMENT, OPTICAL FILTER, LENS UNIT, AND IMAGE PICK-UP APPARATUS
First Claim
1. An electrochromic element comprising:
- a first electrode;
a second electrode; and
a third electrode, wherein;
at least one of the first electrode and the second electrode is a transparent electrode, and an electrolyte, an anodic organic electrochromic compound, and a cathodic redox substance are present between the first electrode and the second electrode,the third electrode is electrically connectable to the first electrode or the second electrode via the electrolyte,the third electrode contains an irreversibly oxidizable substance, andthe oxidizable substance is not oxidized by a first oxidant of the anodic organic electrochromic compound but is more easily oxidizable than a reductant in an irreversible oxidation reaction of the anodic organic electrochromic compound.
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Abstract
The present invention provides an electrochromic element that includes a first electrode, a second electrode, and a third electrode, wherein at least one of the first electrode and the second electrode is a transparent electrode, and an electrolyte, an anodic organic electrochromic compound, and a cathodic redox substance are present between the first electrode and the second electrode, the third electrode is electrically connectable to the first electrode or the second electrode via the electrolyte, the third electrode contains an irreversibly oxidizable substance, and the oxidizable substance is not oxidized by a first oxidant of the anodic organic electrochromic compound but is more easily oxidizable than a reductant in an irreversible oxidation reaction of the anodic organic electrochromic compound.
10 Citations
20 Claims
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1. An electrochromic element comprising:
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a first electrode; a second electrode; and a third electrode, wherein; at least one of the first electrode and the second electrode is a transparent electrode, and an electrolyte, an anodic organic electrochromic compound, and a cathodic redox substance are present between the first electrode and the second electrode, the third electrode is electrically connectable to the first electrode or the second electrode via the electrolyte, the third electrode contains an irreversibly oxidizable substance, and the oxidizable substance is not oxidized by a first oxidant of the anodic organic electrochromic compound but is more easily oxidizable than a reductant in an irreversible oxidation reaction of the anodic organic electrochromic compound. - View Dependent Claims (3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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2. An electrochromic element comprising:
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a first electrode; a second electrode; and a third electrode, wherein; at least one of the first electrode and the second electrode is a transparent electrode, and an electrolyte, a cathodic organic electrochromic compound, and an anodic redox substance are present between the first electrode and the second electrode, the third electrode is electrically connectable to the first electrode or the second electrode via the electrolyte, the third electrode contains an irreversibly reducible substance, and the reducible substance is not reduced by a first reductant of the cathodic organic electrochromic compound but is more easily reducible than an oxidant in an irreversible reduction reaction of the cathodic organic electrochromic compound. - View Dependent Claims (5)
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Specification