ELECTROCHROMIC DEVICE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Abstract

An electrochromic device, a preparation method therefor and an application thereof are disclosed. The electrochromic device comprises a first conductive layer, a color-changing layer and a second conductive layer that are arranged in succession, wherein at least one first electrode lead is connected on the first conductive layer, and the first electrode lead passes through the color-changing layer and the second conductive layer; and at least one second electrode lead is connected on the second conductive layer, and the second electrode lead passes through the color-changing layer and the first conductive layer. The electrochromic device can achieve the application of the electrochromic device under the premise that the two conductive layers are not staggered, and on the basis of implementing electrochromism, the technical effect of gradual color change can be achieved by means of changing the magnitude of the power supply voltage and/or current.

Claims

1. An electrochromic device, comprising a first conductive layer, a color-changing layer and a second conductive layer arranged in sequence; wherein at least one first electrode lead is connected on the first conductive layer, and the first electrode lead passes through the color-changing layer and the second conductive layer; and wherein at least one second electrode lead is connected on the second conductive layer, and the second electrode lead passes through the color-changing layer and the first conductive layer.

2. The electrochromic device according to claim 1, wherein a first accommodating portion is arranged on the color-changing layer and the second conductive layer for the first electrode lead to pass through; a second accommodating portion is arranged on the color-changing layer and the first conductive layer for the second electrode lead to pass through.

3. The electrochromic device according to claim 2, wherein shapes of the first accommodating portion and the second accommodating portion are identical or different, and are each independently selected from any regular or irregular shape.

4. The electrochromic device according to claim 2, wherein shapes of the first accommodating portion and the second accommodating portion are identical or different, and are each independently selected from a polygon, an ellipse, a sector or a circle.

5. The electrochromic device according to claim 3, wherein axes of all the first accommodating portion and the second accommodating portion are located on a same flat surface, a same bended surface, a same cambered surface or a same cylindrical surface.

6. The electrochromic device according to claim 3, wherein axes of all the first accommodating portions and the second accommodating portions are located on at least two flat surfaces, and each flat surface comprises both part of the first accommodating portions and part of the second accommodating portions; or axes of all the first accommodating portions and the second accommodating portions are located on two flat surfaces, wherein the axes of part of the first accommodating portions and part of the second accommodating portions are all located on a first flat surface, and the axes of the rest of the first accommodating portions and the rest of the second accommodating portions are all located on a second flat surface; or axes of all the first accommodating portions and the second accommodating portions are located on three flat surfaces, wherein the axes of a first part of the first accommodating portions and a first part of the second accommodating portions are all located on a first flat surface, the axes of a second part of the first accommodating portions and a second part of the second accommodating portions are all located on a second flat surface, and the axes of the rest of the first accommodating portions and the rest of the second accommodating portions are all located on a third flat surface.

7. The electrochromic device according to claim 1, wherein the first conductive layer and the second conductive layer are both a transparent conductive layer; and/or materials of the first electrode lead and the second electrode lead are identical or different, and the first electrode lead and the second electrode lead are each independently selected from copper foil, aluminum foil, nickel foil, alloy conductive foil, conductive silver paste, metal conductive filament, conductive cloth or conductive graphene.

8. The electrochromic device according to claim 1, wherein the electrochromic device further comprises a first transparent protective layer and a second transparent protective layer, the first transparent protective layer covers on an outer side of the first conductive layer, and the second transparent protective layer covers on an outer side of the second conductive layer.

9. The electrochromic device according to claim 1, wherein the electrochromic device further comprises a first shielding layer, and the first shielding layer covers on an outer side of the first conductive layer; optionally, the first shielding layer covers an outer side of a first transparent protective layer.

10. A preparation method for the electrochromic device according to claim 1, comprising the following steps: (2) arranging at least one first accommodating portion on the color-changing layer and the second conductive layer of the electrochromic device, and then leading the first electrode lead to pass through the first accommodating portion and to be connected on the first conductive layer; and (3) arranging at least one second accommodating portion on the color-changing layer and the first conductive layer of the electrochromic device, and then leading the second electrode lead to pass through the second accommodating portion and to be connected on the second conductive layer, so as to obtain the electrochromic device.

11. The preparation method according to claim 10, wherein a method for arranging an accommodating portion comprises a mechanical cutting method or a laser cutting method; optionally, the method for arranging an accommodating portion comprises that firstly applying mechanical cutting or laser cutting, and then performing mechanical cleaning or laser cleaning, so as to obtain the accommodating portion.

12. The preparation method according to claim 11, wherein in the preparation method, a method for connecting the electrode lead on the conductive layer comprises sticking or dispensing.

13. An electrochromic module, wherein the electrochromic module is prepared by splicing at least two electrochromic devices according to claim 1.

14. The electrochromic module according to claim 13, wherein the electrochromic module further comprises a third transparent protective layer and a fourth transparent protective layer, the third transparent protective layer covers on an outer side of the first conductive layer, and the fourth transparent protective layer covers on an outer side of the second conductive layer.

15. The electrochromic module according to claim 13, wherein the electrochromic module further comprises a second shielding layer, and the second shielding layer covers on an outer side of the first conductive layer; optionally, the second shielding layer covers on an outer side of a third transparent protective layer.

16. The electrochromic module according to claim 14, wherein the electrochromic module further comprises a second shielding layer, and the second shielding layer covers on the outer side of the first conductive layer; optionally, the second shielding layer covers on the outer side of the third transparent protective layer.

17. The electrochromic device according to claim 4, wherein axes of all the first accommodating portion and the second accommodating portion are located on a same flat surface, a same bended surface, a same cambered surface or a same cylindrical surface.

18. The electrochromic device according to claim 4, wherein axes of all the first accommodating portions and the second accommodating portions are located on at least two flat surfaces, and each flat surface comprises both part of the first accommodating portions and part of the second accommodating portions; or axes of all the first accommodating portions and the second accommodating portions are located on two flat surfaces, wherein the axes of part of the first accommodating portions and part of the second accommodating portions are all located on a first flat surface, and the axes of the rest of the first accommodating portions and the rest of the second accommodating portions are all located on a second flat surface; or axes of all the first accommodating portions and the second accommodating portions are located on three flat surfaces, wherein the axes of a first part of the first accommodating portions and a first part of the second accommodating portions are all located on a first flat surface, the axes of a second part of the first accommodating portions and a second part of the second accommodating portions are all located on a second flat surface, and the axes of the rest of the first accommodating portions and the rest of the second accommodating portions are all located on a third flat surface.

19. The electrochromic device according to claim 2, wherein the first conductive layer and the second conductive layer are both a transparent conductive layer; and/or materials of the first electrode lead and the second electrode lead are identical or different, and the first electrode lead and the second electrode lead are each independently selected from copper foil, aluminum foil, nickel foil, alloy conductive foil, conductive silver paste, metal conductive filament, conductive cloth or conductive graphene.

20. The electrochromic device according to claim 2, wherein the electrochromic device further comprises a first transparent protective layer and a second transparent protective layer, the first transparent protective layer covers on an outer side of the first conductive layer, and the second transparent protective layer covers on an outer side of the second conductive layer.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0057] FIG. 1 is a schematic cross-sectional view of the electrochromic device provided in Example 1.

[0058] In FIG. 1, 1—the first conductive layer; 11—the first transparent substrate layer; 12—the first conductive material layer; 2—the electrochromic layer; 3—the electrolyte layer; 4—the ion storage layer; 5—the second conductive layer; 51—the second transparent substrate layer; 52—the second conductive material layer; 71—the first electrode lead; and 72—the second electrode lead.

[0059] FIG. 2 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 1.

[0060] FIG. 3 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 2.

[0061] FIG. 4 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 3.

[0062] FIG. 5 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 4.

[0063] FIG. 6 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 5.

[0064] FIG. 7 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 6.

[0065] FIG. 8 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 7.

[0066] FIG. 9 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 8.

[0067] FIG. 10 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 9.

[0068] FIG. 11 is a schematic structural diagram showing the specific position of the first accommodating portion and the second accommodating portion in Example 10.

[0069] In those figures, 61—the first accommodating portion; and 62—the second accommodating portion.

[0070] FIG. 12 is a schematic structural diagram showing the electrochromic module provided in Application Example 1.

[0071] FIG. 13 is another schematic structural diagram showing the electrochromic module provided in Application Example 1.

[0072] In FIG. 13, 81—the third transparent glass layer; 82—the fourth transparent glass layer; and 100—the electrochromic device provided in Example 1.

[0073] FIG. 14 is a schematic structural diagram showing the electrochromic module provided in Application Example 2.

[0074] FIG. 15 is another schematic structural diagram showing the electrochromic module provided in Application Example 2.

[0075] In those figures, 91—the shielding layer; and 911—the black part.

DETAILED DESCRIPTION

[0076] The technical solution of the present application is further described below through specific embodiments. It should be apparent to those skilled in the art that the embodiments described herein are only used for a better understanding of the present application, and should not be construed as a specific limitation to the present application.

[0077] The embodiments, in which the specific techniques or conditions are not specified, are performed according to the techniques or conditions described in the literature in the field or according to the product specification. The reagents or instruments used, whose manufacturer are not specified, are all conventional products that can be commercially purchased through regular channels.

Example 1

[0078] This example provides an electrochromic device, as shown in FIG. 1, including a first conductive layer 1, an electrochromic layer 2, an electrolyte layer 3, an ion storage layer 4 and a second conductive layer 5 arranged in sequence.

[0079] In this example, the first conductive layer 1 was composed of a first transparent substrate layer 11 and a first conductive material layer 12, and was a transparent ITO conductive glass, having a thickness of 0.125 mm.

[0080] In this example, a color-changing layer was composed of the electrochromic layer, the electrolyte layer and the ion storage layer.

[0081] The electrochromic layer 2 was poly(ethylhexane)propyldioxythiophene of 15 KDa, having a thickness of 200 nm.

[0082] In this example, the electrolyte layer 3 was the PEO dissolved by 25 wt % LiClO.sub.4, having a thickness of 10 μm.

[0083] In this example, the ion storage layer 4 was tungsten trioxide, having a thickness of 200 nm.

[0084] In this example, the second conductive layer 5 was composed of a second transparent substrate layer 51 and a second conductive material layer 52, and was a transparent ITO conductive glass, having a thickness of 0.180 mm.

[0085] In this example, three first accommodating portions were arranged on the electrochromic layer 2, the electrolyte layer 3, the ion storage layer 4 and the second conductive layer 5, and then first electrode leads 71 were connected on the first conductive layer 1 passing through the first accommodating portions.

[0086] In this example, three second accommodating portions were arranged on the ion storage layer 4, the electrolyte layer 3, the electrochromic layer 2 and the first conductive layer 1, and then second electrode leads 72 were the second conductive layer 5 passing through the second accommodating portions.

[0087] In this example, as shown in FIG. 2, all the first accommodating portions and the second accommodating portions were circles with a diameter of 5 mm, of which the axes were located on the same flat surface, and the flat surface was located at one side of the electrochromic device 10 mm close to the edge.

[0088] For subjecting the electrochromic device provided in this example to application, taken the technical effect of gradual color-changing as an example, the detail method is described below.

[0089] The first electrode leads were connected to the positive pole of a power supply, and the second electrode leads were connected to the negative pole of the power supply. After the power supply was turned on, the entire electrochromic device changed from dark to bright. The color-changing process extended from positions where the electrode leads were arranged to other places, and that is, the straight-line region formed by accommodating portions began to change to bright firstly, and then other regions gradually changed from dark to bright.

[0090] Or the first electrode leads were connected to the negative pole of a power supply, and the second electrode leads were connected to the positive pole of the power supply. After the power supply was turned on, the entire electrochromic device changed from bright to dark. The color-changing process extended from positions where the electrode leads were arranged to other places, and that is, the straight-line region formed by accommodating portions began to change to dark firstly, and then other regions gradually changed from bright to dark.

Example 1-2

[0091] This example differs from Example 1 only in that all the accommodating portions in this example were squares, and the side length was 10 mm.

Example 1-3

[0092] In order to illustrate that the structure in the present application is suitable for an electrochromic device in the prior art that satisfies the requirement of forming holes, several examples are listed.

a. The conductive layer was PET/ITO, the electrochromic layer was WO.sub.3, the electrolyte layer was LiTaO.sub.3, and the ion storage layer was NiO.sub.x.
b. The conductive layer was glass/ITO, the electrochromic layer was WO.sub.3, the electrolyte layer was polyvinyl butyral containing 25 vol. % propylene carbonate, and the ion storage layer was NiO.sub.x.
c. The conductive layer was PET/ITO, the electrochromic layer was P3HT, the electrolyte layer was PEO dissolving LiClO.sub.4, and the ion storage layer was poly4-methacrylic acid-2,2,6,6-tetramethylpiperidine-1-nitroxide (free radical).

Example 2

[0093] This example differs from Example 1 in that, as shown in FIG. 3, five first accommodating portions and five second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on the same bended surface, and the bended surface was located at two sides of the electrochromic device close to the edge.

Example 3

[0094] This example differs from Example 2 in that, as shown in FIG. 4, eight first accommodating portions and eight second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on the same bended surface, and the bended surface was located at three sides of the electrochromic device close to the edge.

Example 4

[0095] This example differs from Example 2 in that, as shown in FIG. 5, nine first accommodating portions and nine second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on the same bended surface, and the bended surface was located at four sides of the electrochromic device close to the edge.

Example 5

[0096] This example differs from Example 1 in that, as shown in FIG. 6, six first accommodating portions and six second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on the same cylindrical surface, and the cylindrical surface was located in a position of the electrochromic device close to the edge.

Example 6

[0097] This example differs from Example 5 in that, as shown in FIG. 7, the axes of all the first accommodating portions and the second accommodating portions were located on the same cylindrical surface, and the cylindrical surface was located in a position of the electrochromic device close to the center.

Example 7

[0098] This example differs from Example 5 in that, as shown in FIG. 8, the electrochromic device of this example was a circular device.

Example 8

[0099] This example differs from Example 1 in that, as shown in FIG. 9, six first accommodating portions and six second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on two flat surfaces separately; the two line segments, which were formed by the projections of the two flat surfaces where the first accommodating portions and the second accommodating portions were located on the surface of the electrochromic device, were located at two sides of the electrochromic device close to the edge respectively, and were arranged in parallel.

Example 9

[0100] This example differs from Example 8 in that, as shown in FIG. 10, four first accommodating portions and four second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on two flat surfaces; the two line segments, which were formed by the projections of the two flat surfaces where the first accommodating portions and the second accommodating portions were located on the surface of the electrochromic device, were located at two sides of the electrochromic device close to the edge respectively, and were arranged in stagger.

Example 10

[0101] This example differs from Example 1 in that, as shown in FIG. 11, nine first accommodating portions and nine second accommodating portions were arranged in this example, and the axes of all the first accommodating portions and the second accommodating portions were located on three flat surfaces; the three flat surfaces were arranged in parallel, and were respectively located at the two sides of the electrochromic device close to the edge, and in the middle position of the electrochromic device.

Application Example 1

[0102] An electrochromic module, as shown in FIG. 12, was prepared by splicing four electrochromic devices 100 provided in Example 1.

[0103] In this example, as shown in FIG. 13, the electrochromic module further included a third transparent glass layer 81 and a fourth transparent glass layer 82. The third transparent glass layer 81 was bonded to the first conductive layer by a transparent binder film, and was located on the outer side of the first conductive layer. The fourth transparent glass layer 82 was bonded to the first conductive layer by a transparent binder film, and was located on the outer side of the second conductive layer.

[0104] The preparation method included that: a transparent binder film was placed on the fourth transparent glass layer 82; a plurality of electrochromic devices 100 were placed as close as possible to each other, and were arranged as the structure shown in FIG. 12; then another transparent binder film was placed on the upper surface of the spliced electrochromic device 100, and the third transparent glass layer 81 was placed; and pressing was performed.

Application Example 2

[0105] This application example differs from Application Example 1 in that, as shown in FIG. 14, the electrochromic module further included a shielding layer 91, and the shielding layer 91 was covered on the outer side of a third transparent glass layer, and those two layers were bonded by a transparent binder film.

[0106] In this example, as shown in FIG. 15, the shielding layer 91 was composed of a black part 911 and a transparent part, wherein the black part had a function of shielding the splicing line and had an effect of partitioning visually.

[0107] The applicant has stated that although the electrochromic device, the preparation method therefor and application thereof in the present application are illustrated through the examples described above in the present application, the present application is not limited to the processes and steps described above, which means that the implementation of the present application does not necessarily depend on the processes and steps described above. It should be apparent to those skilled in the art that any improvements made to the present application, equivalent replacements of raw materials selected in the present application and addition of adjuvant ingredients thereof, selections of specific methods, etc., all fall within the protection scope and the disclosed scope of the present application.