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US 10,705,403 B1Granted
Charge sequestration methods for electrochromic devices
AssigneeKinestral Technologies, Inc.
InventorsJohn Bass, Hugues Duncan, Jonathan Ziebarth
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Abstract
A method of controlling an electrochromic device is provided. The method includes measuring an open circuit voltage between a first electrode and a reference electrode in the electrochromic device in a fully bleached state. The method includes calculating a charge Q to return the first electrode to a baseline state and darkening the first electrode in the electrochromic device to a darkened state. The method includes transferring charge from the first electrode in the darkened state to a redox element.
Claims14
A method, comprising:
- a) providing an electrochromic device comprising:
- a first electrode comprising an electrochromic material;
- a second electrode;
- a redox element comprising a sequestration material and an auxiliary electrode material;
- and
- a reference electrode comprising a consistent potential with respect to Li+/Li over time;
- b) applying a first electrical potential between the first and the second electrodes until the electrochromic device is in a fully bleached state;
- c) measuring a first open circuit voltage between the first electrode and the reference electrode in the electrochromic device in the fully bleached state;
- d) calculating a charge Q to return the first electrode to a baseline state based on the first open circuit voltage measured in step c);
- e) applying a second electrical potential between the first and second electrodes until the electrochromic device is in a darkened state;
- and
- f) applying a third electrical potential between the first electrode and the redox element to transfer charge from the first electrode in the darkened state to the redox element.
9 more elements
Dependencies are inferred from the claim text.