ELECTROCHROMIC DEVICE
First Claim
1. An electrochromic device comprising:
- a stack successively comprising;
(a) a first current collector;
(b) an electrochromic electrode made of a material capable of reversibly inserting metal ions;
(c) an electrolyte ;
(d) a second current collector;
a reflective substrate in contact with the second current collector,wherein it comprises a single electrochromic electrode and has at least the two following functional states;
a first absorbing functional state, induced by the application of a first electric voltage between the two current collectors, wherein the device comprises metal ions reversibly inserted into the material of the electrochromic electrode; and
a second reflective functional state, subsequent to the application of a second electric voltage between the two current collectors, wherein a metal layer is formed between the electrolyte and the second current collector, this metal layer comprising at least part of the metal ions initially reversibly inserted into the material of the electrochromic electrode.
1 Assignment
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Accused Products
Abstract
An electrochromic device includes a stack successively including: a first current collector, an electrochromic electrode made of a material capable of reversibly inserting metal ions, an electrolyte, a second current collector, a reflective substrate contacting the first current collector or with the second current collector. It includes a single electrochromic electrode and has at least the two following functional states: a first absorbing functional state, induced by the application of a first electric voltage between the two current collectors, wherein the device includes metal ions reversibly inserted into the material of the electrochromic electrode; and a second reflective functional state subsequent to the application of a second electric voltage between the two current collectors, wherein a metal layer is formed between the electrolyte and the second current collector, this metal layer including at least part of the metal ions initially reversibly inserted into the material of the electrochromic electrode.
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Citations
13 Claims
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1. An electrochromic device comprising:
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a stack successively comprising; (a) a first current collector; (b) an electrochromic electrode made of a material capable of reversibly inserting metal ions; (c) an electrolyte ; (d) a second current collector; a reflective substrate in contact with the second current collector, wherein it comprises a single electrochromic electrode and has at least the two following functional states; a first absorbing functional state, induced by the application of a first electric voltage between the two current collectors, wherein the device comprises metal ions reversibly inserted into the material of the electrochromic electrode; and a second reflective functional state, subsequent to the application of a second electric voltage between the two current collectors, wherein a metal layer is formed between the electrolyte and the second current collector, this metal layer comprising at least part of the metal ions initially reversibly inserted into the material of the electrochromic electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
wherein the electrochromic electrode is made of WO3 or V2O5; and wherein the electrolyte is made of lithium oxynitride, advantageously of lithium phosphorus oxynitride.
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13. The electrochromic device of claim 1, wherein said device successively comprises:
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a ceramic substrate; a first current collector; an LiV2O5 electrochromic electrode; a LiPON electrolyte; a second structured current collector.
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Specification