Electrochromic devices and methods
First Claim
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1. An electrochromic device formed by a process comprising:
- providing a plurality of layers including;
a first electrode comprising one of a cathodic electrochromic layer or an anodic counter electrode layer,a second electrode comprising the other of the electrochromic layer or the anodic counter electrode layer,an ion-conductor layer between the first and second electrodes,a first conductive layer, anda second conductive layer, the first and second electrodes and the ion-conductor layer being sandwiched between the first and second conductive layers, and the anodic counter electrode layer comprises a mixed tungsten-nickel oxide and lithium; and
heating the plurality of layers at a temperature ranging from 355°
C. to about 500°
C. to react the mixed tungsten-nickel oxide and lithium.
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Abstract
A heat treated electrochromic device comprising an anodic complementary counter electrode layer comprised of a mixed tungsten-nickel oxide and lithium, which provides a high transmission in the fully intercalated state and which is capable of long term stability, is disclosed. Methods of making an electrochromic device comprising an anodic complementary counter electrode comprised of a mixed tungsten-nickel oxide are also disclosed.
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Citations
29 Claims
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1. An electrochromic device formed by a process comprising:
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providing a plurality of layers including; a first electrode comprising one of a cathodic electrochromic layer or an anodic counter electrode layer, a second electrode comprising the other of the electrochromic layer or the anodic counter electrode layer, an ion-conductor layer between the first and second electrodes, a first conductive layer, and a second conductive layer, the first and second electrodes and the ion-conductor layer being sandwiched between the first and second conductive layers, and the anodic counter electrode layer comprises a mixed tungsten-nickel oxide and lithium; and heating the plurality of layers at a temperature ranging from 355°
C. to about 500°
C. to react the mixed tungsten-nickel oxide and lithium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrochromic device comprising:
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a first electrode comprising one of a cathodic electrochromic layer or an anodic counter electrode layer, a second electrode comprising the other of the electrochromic layer or the anodic counter electrode layer, an ion-conductor layer between the first and second electrodes, a first conductive layer, and a second conductive layer, the first and second electrodes and the ion-conductor layer being sandwiched between the first and second conductive layers, and the anodic counter electrode layer comprises a mixed tungsten-nickel oxide including an admixture of amorphous nickel oxide and crystalline tungsten oxide, wherein the amount of nickel in the mixed tungsten-nickel ranges from about 30% to about 90% by weight of the mixed tungsten-nickel. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An electrochromic device comprising:
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a first electrode comprising one of a cathodic electrochromic layer or an anodic counter electrode layer, a second electrode comprising the other of the electrochromic layer or the anodic counter electrode layer, an ion-conductor layer between the first and second electrodes, a first conductive layer, and a second conductive layer, the first and second electrodes and the ion-conductor layer being sandwiched between the first and second conductive layers, and the anodic counter electrode layer comprises a mixed tungsten-nickel oxide and lithium, wherein the amount of lithium in the anodic counter electrode is in excess of an amount that provides a maximum transmission through the counter electrode. - View Dependent Claims (17, 18, 19, 20, 21)
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22. An electrochromic device comprising:
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a first electrode comprising one of a cathodic electrochromic layer or a counter electrode layer, a second electrode comprising the other of the electrochromic layer or the counter electrode layer, an ion-conductor layer between the first and second electrodes, a first conductive layer, and a second conductive layer, the first and second electrodes and the ion-conductor layer being sandwiched between the first and second conductive layers, and wherein the counter electrode layer includes an amount of lithium in excess of an amount that provides a maximum transmission through the counter electrode. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification