Flexible quick-response electro-reflective device and preparation method thereof

Abstract

The invention relates to the technical field of electro-reflective devices, in particular to a novel quick-response electro-reflective device and a preparation method thereof. The device is of a sandwich structure, and the middle layer is an electrolyte layer; the electrolyte layer comprises a non-cured area in the center and a cured area on the edge; the substrate layer and the electrode layer are made of transparent materials. The preparation method comprises the following steps: preparing an electrolyte; sputtering an electrode layer on a clean transparent substrate, carrying out edge sealing to prepare an electrode box with an opening in one side, injecting an electrolyte, and carrying out sealing treatment on one side of an injection port; and covering the non-curing area by adopting a light-proof mold, and carrying out photo-induced curing or thermal-induced curing on the curing area, so that the liquid electrolyte in the curing area is converted into solid electrolyte, thereby completing the preparation of the device. The device has the advantages that the mechanical strength and sealing performance of the device are enhanced, and the leakage rate is remarkably reduced; the main body part of the device retains the high ionic conductivity of the liquid electrolyte, so that the excellent color changing speed and effect of the electro-reflective device are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of electro-reflective devices, and in particular to a novel fast-response electro-reflective device and a preparation method thereof. Background Art

[0002] Electrochromism (EC) is a phenomenon in which the optical properties of a material (such as reflectivity, transmittance, absorptivity, etc.) undergo stable and reversible color changes under the action of an external electric field. This technology has broad application prospects in the fields of energy-saving windows and displays. In recent years, this technology has made significant progress in many fields.

[0003] Electroreflective technology is a new type of electrochromic technology. Through the cyclic deposition and dissolution of metal on the surface of the transparent conductive layer on the working electrode, the reversible conversion between transparent state, dark light-blocking state and mirror reflective state is achieved, thereby adjusting natural light and infrared heat. It can adjust the transmittance from 90% to 0.1%, and the modulation rate is as high as 90%. In contrast, traditional electrochromic glass can usually only achieve a visible light modulation rate of 60~70%, such as the device disclosed in the announcement number CN116119942B, the announcement date August 9, 2024, and the invention name "A visible-near-infrared dual-frequency electrochromic niobium tungsten oxide film and its preparation method and application". The uniqueness of electroreflective technology adds a mirror reflective state, which can reflect almost all visible light and infrared rays, with an average reflectivity of more than 90%, thereby greatly reducing the visible light and infrared heat radiation of the sun.

[0004] The electrolyte layer of the electrochromic device is its core component. According to the different physical states, it is mainly divided into three categories: liquid electrolyte, gel electrolyte and solid electrolyte. Liquid electrolyte has a good color change effect in electrochromic devices due to its high ionic conductivity, but its disadvantages are also obvious, such as poor chemical stability, easy decomposition, low safety, leakage risk, and complex packaging process, which increases the difficulty of production. Gel electrolyte has improved the stability problem of liquid electrolyte to a certain extent, but its ionic conductivity, mechanical properties and long-term stability still need to be further improved to adapt to a wider range of application scenarios. In contrast, solid electrolytes have excellent chemical stability and mechanical properties, are not easy to leak, have high safety, and are suitable for a variety of environments. However, the ionic conductivity of solid electrolytes is relatively low, which limits its color change speed and effect. In addition, the preparation process of solid electrolytes is relatively complex and costly, and the interface problem has always been a technical problem, which requires further research and solution by scientific researchers.

[0005] In summary, the existing electroreflective device electrolytes have many shortcomings. Liquid electrolytes have poor stability, low safety, and are difficult to encapsulate. Gel electrolytes have room for improvement in ionic conductivity and mechanical properties, and lack long-term stability. Solid electrolytes are safe and stable, but have low conductivity, complex preparation processes, and prominent interface problems. These shortcomings limit the performance and application scope of electroreflective devices. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a novel fast-response electro-reflective device and a preparation method thereof.

[0007] The first object of the present invention is to provide a novel fast-response electroreflective device, comprising a substrate layer, an electrode layer, an electrolyte layer, an electrode layer and a packaging layer arranged in sequence from bottom to top; The electrolyte layer includes a non-solidified area at the center and a solidified area at the edge; the substrate layer is a transparent substrate, and the electrode layer is a transparent conductive layer.

[0008] Preferably, the thickness of the electrolyte layer is 10um~1.5mm.

[0009] Preferably, the components of the electrolyte in the electrolyte layer include an organic solvent, an electrolyte salt, an additive, a polymer matrix and an initiator.

[0010] Preferably, the substrate layer is a glass substrate; the substrate layer and the packaging layer are made of the same material; the electrode layer is made of ITO electrode, Pt electrode or silver nanowire.

[0011] The second object of the present invention is to provide a method for preparing a novel fast-response electro-reflective device, which specifically comprises the following steps: S1. Preparation of an electrolyte: mixing an organic solvent, an electrolyte salt, an additive, a polymer matrix and an initiator to obtain an electrolyte; S2. Preparation of electrode box; specifically comprising the following sub-steps: S201. Clean the transparent substrate, dry it, and obtain a substrate layer; S202. The surface of the substrate layer is coated by sputtering to obtain an electrode layer; S203. Prepare a polytetrafluoroethylene gasket, place the polytetrafluoroethylene gasket between two electrode layers placed opposite to each other; seal the edges of both sides of the polytetrafluoroethylene gasket in parallel, remove the polytetrafluoroethylene gasket after sealing, and seal one of the remaining two sides to form an electrode box with a single-side opening; S3. Device packaging and curing: Inject the electrolyte prepared in step S1 into the electrode box prepared in step S2, and seal one side of the injection port; use an opaque mold to cover the non-cured area, and perform photo-induced curing or thermal-induced curing on the cured area to convert the liquid electrolyte in the cured area into a solid electrolyte, thereby completing the device preparation.

[0012] Preferably, the initiator is a photoinitiator or a thermal initiator; the photoinitiator is Irgacure 184, Irgacure 651, triphenylsulfonium hexafluorophosphate or diphenyl mercaptan; the thermal initiator is azobisisobutyronitrile, benzoyl peroxide or sodium nitrite.

[0013] Preferably, step S1 includes the following sub-steps: S101. The electrolyte salt and the additive are mixed in proportion, added to the organic solvent, and stirred for more than 3 hours to ensure a uniform mixture; S102. Add 5 to 30 wt% of the total mass of the electrolyte to the mixture, and continue stirring for more than 3 hours until uniformly dispersed; S103. Add 0.1-1 wt% of the total mass of the electrolyte as a photoinitiator or a thermal initiator, stir until evenly distributed, and obtain an electrolyte.

[0014] Preferably, the electrolyte salt in step S1 is silver nitrate, lithium perchlorate, lithium tetrafluoroborate, lithium hexafluorophosphate or trichloroaluminate; the additive is cupric chloride, tetrabutylammonium bromide and / or lithium bromide; the organic solvent is propylene carbonate, ethylene carbonate, dimethyl carbonate, N,N-dimethylformamide, ethyl methyl carbonate or N-methyl-2-pyrrolidone; and the polymer matrix includes neopentyl glycol diacrylate, ethylene glycol dimethacrylate, hydroxyethyl acrylate and / or trimethylolpropane triacrylate.

[0015] Preferably, in step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10wt% of the total mass of the electrolyte; the photoinitiator is Irgacure 184, accounting for 0.5wt% of the total mass of the electrolyte; In the step S3, a photo-induced curing method is adopted, and an ultraviolet lamp matching the wavelength of the photoinitiator is used to irradiate the curing area, and the irradiation time is 3 to 10 minutes.

[0016] Preferably, in step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10wt% of the total mass of the electrolyte; the thermal initiator is azobisisobutyronitrile; In the step S3, a heat-induced curing method is adopted, the heating temperature is 60-90° C., and the heating time is 1-3 hours.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects: The present invention uses in-situ polymerization technology to accurately convert the liquid electrolyte on the edges of the electroreflective device into a solid electrolyte, thereby forming a unique solid-liquid mixed electrolyte system. This design combines the chemical stability and mechanical strength advantages of the solid electrolyte, significantly enhances the mechanical strength and sealing performance of the device, effectively prevents the leakage of the electrolyte, reduces the leakage rate of the device by 95%, ensures the reliability and safety of the device, and effectively overcomes the difficulties of traditional liquid electrolytes in the packaging process. While maintaining the high stability and safety of the solid electrolyte on the edges, the main part of the device still retains the high ionic conductivity of the liquid electrolyte, ensuring the excellent color change speed and effect of the electroreflective device. In addition, the process flow of light curing or thermal curing is simple, and large-scale roll-to-roll production of flexible electroreflective devices can be realized. The present invention opens up a new path for the in-depth research and application of electroreflective technology, and provides technical support for the large-scale and industrialization of electroreflective devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a novel fast-response electro-reflective device provided according to an embodiment of the present invention.

[0019] Figure 2 Schematic diagram of the planar area division of a novel fast-response electro-reflective device provided according to an embodiment of the present invention.

[0020] Reference numerals: 1. Substrate layer; 2. Electrode layer; 3. Electrolyte layer; 4. Packaging area; 5. Curing area; 6. Non-curing area; 7. Encapsulation layer. DETAILED DESCRIPTION

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0023] The present invention provides a novel fast-response electroreflective device, comprising a substrate layer, an electrode layer, an electrolyte layer, an electrode layer and a packaging layer arranged in sequence from bottom to top; The thickness of the electrolyte layer is 10um~1.5mm; the electrolyte layer includes a non-solidified area at the center and a solidified area at the edge; The substrate layer is a transparent substrate, preferably a glass substrate; The electrode layer is composed of a working electrode and a counter electrode, and is preferably a transparent conductive layer, which can be realized by conductive glass (such as ITO glass) or a transparent conductive composite layer formed by combining a transparent material with a conductive material; the material of the electrode layer is an ITO electrode, a Pt electrode or a silver nanowire; in a specific embodiment, the electrode layer is an ITO electrode; The components of the electrolyte include organic solvent, electrolyte salt, additive, polymer matrix and initiator; The preparation method specifically comprises the following steps: S1. Preparation of electrolyte: uniformly mixing an organic solvent, an electrolyte salt, an additive, a polymer matrix and an initiator to obtain an electrolyte; specifically comprising the following sub-steps: S101. The electrolyte salt and the additive are mixed in a precise proportion, added to the organic solvent, and stirred for more than 3 hours to ensure that the mixture is uniform; the mass ratio of the electrolyte salt to the additive is 5~10:60~70; Preferably, the electrolyte salt is silver nitrate (AgNO3), lithium perchlorate (LiClO4), lithium tetrafluoroborate (LiPF4), lithium hexafluorophosphate (LiPF6), trichloroaluminate (Al(ClO4)3), etc.; the additive is copper chloride CuCl2, tetrabutylammonium bromide (TBABr), lithium bromide, etc.; the organic solvent is propylene carbonate (PC), ethylene carbonate (EC), dimethyl carbonate (DMC), N,N-dimethylformamide (DMF), ethyl methyl carbonate (EMC), N-methyl-2-pyrrolidone (NMP) and various ionic solvents, etc.; In a specific embodiment, the electrolyte salt is silver nitrate AgNO3, and the additive is copper chloride CuCl2 and tetrabutylammonium bromide TBAB, which are mixed in a mass ratio of 6.5:1:62; S102. Add 5 to 30 wt% of the total mass of the electrolyte to the mixture, and continue stirring for more than 3 hours until uniformly dispersed; Preferably, the polymer matrix accounts for 10-15wt% of the total mass of the electrolyte; the polymer matrix includes but is not limited to monomers such as neopentyl glycol diacrylate (NPGDA), ethylene glycol dimethacrylate (EGDMA), hydroxyethyl acrylate (HEA), and trimethylolpropane triacrylate (TMPTA); In a specific embodiment, the polymer matrix is ​​neopentyl glycol diacrylate (NPGDA), which accounts for 10 wt % of the total mass of the electrolyte; S103. Add 0.1 to 1 wt% of the total mass of the total electrolyte as a photoinitiator or thermal initiator and stir until evenly distributed to obtain an electrolyte; Preferably, the photoinitiator is Irgacure 184, Irgacure 651, triphenylsulfonium hexafluorophosphate or diphenyl mercaptan, etc. In a specific embodiment, the photoinitiator is Irgacure 184, accounting for 0.5wt% of the total mass of the electrolyte; Preferably, the thermal initiator is azobisisobutyronitrile, benzoyl peroxide or sodium nitrite.

[0024] S2. Preparation of electrode box: S201. Clean the transparent substrate (glass substrate), dry it, and obtain a substrate layer; In a specific embodiment, the glass substrate is sequentially placed in acetone, ethanol and deionized water, each of which is ultrasonically cleaned for 15 minutes, and then dried; S202. The surface of the substrate layer is coated by sputtering to obtain an electrode layer; Specifically, the electrode layer is an ITO electrode; S203. Prepare a polytetrafluoroethylene gasket, place the polytetrafluoroethylene gasket between two electrode layers placed opposite to each other; seal the edges of both sides of the polytetrafluoroethylene gasket in parallel, remove the polytetrafluoroethylene gasket after sealing, and seal one of the remaining two sides to form an electrode box with a single-side opening; In a specific embodiment, the polytetrafluoroethylene gasket is in the shape of a long strip and is 300 microns thick; the edge sealing is performed by gluing with a hot melt glue gun.

[0025] S3. Device packaging and curing: injecting the electrolyte prepared in step S1 into the electrode box prepared in step S2, and sealing one side of the injection port; using an opaque mold to cover the non-cured area, and performing photo-induced curing or thermal-induced curing on the cured area to convert the liquid electrolyte in the cured area into a solid electrolyte, thereby completing the device preparation; Preferably, the photo-induced curing uses an ultraviolet lamp with a wavelength matching the selected photoinitiator to irradiate the curing area for 3 to 10 minutes; in a specific embodiment, the wavelength of the ultraviolet lamp is 365nm, and the irradiation time is 5 minutes; Preferably, the heat-induced curing is carried out by heating, the heating temperature is set between 60 and 90° C., and the heating time is within the range of 1 to 3 hours.

[0026] Example 1 See also Figure 1-Figure 2As shown, this embodiment provides a novel fast-response electroreflective device and a method for preparing the same; the device comprises a substrate layer 1, an electrode layer 2, an electrolyte layer 3, an electrode layer 2 and a packaging layer 7 ( Figure 1 ); The electrolyte layer 3 has a thickness in the range of 10um to 1.5mm; the electrolyte layer 3 includes a non-solidified area 6 at the center and a solidified area 5 at the edge; the substrate layer 1 and the encapsulation layer 7 are both glass substrates; the electrode layer 2 is an ITO electrode; The preparation method specifically comprises the following steps: S1. Preparation of electrolyte: specifically comprising the following sub-steps: S101. silver nitrate AgNO3, copper chloride CuCl2, and tetrabutylammonium bromide (TBABr) are mixed in a mass ratio of 6.5:1:62, added into a solvent N-methyl-2-pyrrolidone (NMP), and stirred for more than 3 hours to ensure that the mixture is uniform; S102. Add 10 wt% of the total mass of the electrolyte to the mixture as a polymer matrix neopentyl glycol diacrylate (NPGDA), and continue stirring for more than 3 hours until uniformly dispersed; S103. Add 0.5 wt% of the total mass of the electrolyte as photoinitiator Irgacure 184, stir until evenly distributed, and obtain an electrolyte.

[0027] S2. Preparation of electrode box: S201. The glass substrate is sequentially placed in acetone, ethanol and deionized water, each for 15 minutes of ultrasonic cleaning, followed by drying to obtain a substrate layer 1 or an encapsulation layer 7; S202. ITO coating is performed on the surface of the substrate layer 1 or the encapsulation layer 7 by sputtering to obtain an electrode layer 2; S203. Prepare a long strip of 300-micron-thick polytetrafluoroethylene gasket, and place the polytetrafluoroethylene gasket between two oppositely placed electrode layers 2; use a hot-melt glue gun to seal the edges of both sides of the polytetrafluoroethylene gasket in parallel, and after sealing, take out the polytetrafluoroethylene gasket, and seal one of the remaining two sides to form an electrode box with a single-side opening.

[0028] S3. Device packaging and curing: The electrolyte prepared in step S1 is injected into the electrode box prepared in step S2, and the injected part is the electrolyte layer 3; one side of the injection port is sealed to form a packaging area 4 on the periphery after sealing; a light-proof mold is used to cover the non-curing area 6, and an ultraviolet lamp with a wavelength of 365nm is used to irradiate the curing area 5 for photoinduced curing, and the irradiation time is 5 minutes; the liquid electrolyte in the curing area 5 is converted into a solid electrolyte, and the device preparation is completed.

[0029] like Figure 2As shown, the device surface is divided into different areas, among which the curing area 5 is the key area to be cured; when the photoinitiated curing method is adopted, a specific photoinitiator is selected, such as Irgacure 184, Irgacure 651, triphenylsulfonium hexafluorophosphate or diphenyl mercaptan. In order to ensure that only the curing area 5 is cured, the non-curing area 6 needs to be shielded. Subsequently, the curing area 5 is irradiated with an ultraviolet lamp matching the wavelength of the selected initiator to achieve the curing of the liquid electrolyte. The time required for curing is affected by the thickness of the electrolyte layer 3 and the amount of polymer matrix and initiator added, and is generally between 3 and 10 minutes.

[0030] The shape of the device of the present invention is Figure 2 The example is a square, but the application of the present invention is not limited to this. Rectangles, circles, diamonds and other irregular device shapes can be divided in this way.

[0031] Example 2 This embodiment provides a novel fast-response electroreflective device and a method for preparing the same; the device structure is the same as that of embodiment 1; The preparation method specifically comprises the following steps: S1. Preparation of electrolyte: specifically comprising the following sub-steps: S101. silver nitrate AgNO3, copper chloride CuCl2, and tetrabutylammonium bromide (TBABr) are mixed in a mass ratio of 6.5:1:62, added into an organic solvent N-methyl-2-pyrrolidone (NMP), and stirred for more than 3 hours to ensure that the mixture is uniform; S102. Add 10 wt% of the total mass of the electrolyte to the mixture as a polymer matrix neopentyl glycol diacrylate (NPGDA), and continue stirring for more than 3 hours until uniformly dispersed; S103. Add 0.5 wt% of the total mass of the electrolyte as thermal initiator azobisisobutyronitrile, stir until evenly distributed, and obtain an electrolyte.

[0032] S2. Preparation of electrode box: S201. The glass substrate is sequentially placed in acetone, ethanol and deionized water, each for 15 minutes of ultrasonic cleaning, followed by drying to obtain a substrate layer 1 or an encapsulation layer 7; S202. ITO coating is performed on the surface of the substrate layer 1 or the encapsulation layer 7 by sputtering to obtain an electrode layer 2; S203. Prepare a long strip of 300-micron-thick polytetrafluoroethylene gasket, and place the polytetrafluoroethylene gasket between two oppositely placed electrode layers 2; use a hot-melt glue gun to seal the edges of both sides of the polytetrafluoroethylene gasket in parallel, and after sealing, take out the polytetrafluoroethylene gasket, and seal one of the remaining two sides to form an electrode box with a single-side opening.

[0033] S3. Device packaging and curing: Inject the electrolyte prepared in step S1 into the electrode box prepared in step S2, and the injected part is the electrolyte layer 3; seal one side of the injection port, and form a packaging area 4 on the periphery after sealing; use an opaque mold to cover the non-cured area 6, and perform thermal initiation curing on the cured area, using a heating method, setting the heating temperature to 60~90℃ and the heating time to 1~3 hours; transform the liquid electrolyte in the cured area into a solid electrolyte, and complete the device preparation. During the thermal initiation curing process, due to the thermal conductivity of the electrolyte and the transparent substrate, the non-cured area 6 adjacent to the cured area 5 will be indirectly heated, but due to the uneven heat distribution, it is only necessary to accurately control the amount of polymer matrix and initiator added and the curing time to ensure that the non-cured area 6 remains liquid and does not cure.

[0034] Brief description of the principle: Electrolyte in-situ polymerization technology is an efficient method for directly preparing polymer electrolytes inside electrode materials or electrochromic devices. The in-situ polymerization process is initiated in a variety of ways, including thermal initiation, photoinitiation, chemical initiation or electrochemical initiation. The implementation of the present invention selects thermal initiation or photoinitiation. These two initiation methods can provide a more precise operating space, allowing the polymerization reaction to proceed in a specific area and to a specific extent, thereby avoiding the problems of uneven polymerization or over-polymerization that may occur in traditional methods, so as to achieve precise control of the degree and depth of solid electrolyte polymerization around the edge of the device.

[0035] The key technical points of the present invention are: (1) a solid-liquid combination electrolyte system: in-situ polymerization technology is implemented on the edges of the electroreflective device to convert the liquid electrolyte into a solid state to form a solid electrolyte network (one of the cores of the present invention). This method not only enhances the mechanical strength and sealing performance of the device, but also effectively prevents the leakage of the electrolyte, reduces the leakage rate by 95%, and ensures the stability in extreme environments, greatly improving the safety and durability of the device. While keeping the edges solid, the electrolyte in the main part of the device remains in liquid form, ensuring the effective migration of ions inside the device and maintaining excellent ionic conductivity (greater than 10 -3s / cm), which is equivalent to pure liquid electrolyte, ensuring that the device performance is not affected. (2) Preparation and optimization of the electrolyte system: The protection points of the present invention include the preparation method of the solid-liquid electrolyte network, the composition of the electrolyte system (specific combination and ratio of solid and liquid electrolytes), and a method for accurately regulating the planar area of ​​the electroreflective device. These designs ensure ionic conductivity and electrochemical stability. In summary, the present invention innovatively proposes an electrolyte with both solid and liquid properties, a new type of fast-response electroreflective device and its preparation method and application. By using in-situ polymerization technology, the liquid electrolyte on the edges of the electroreflective device is accurately converted into a solid electrolyte, thereby forming a unique solid-liquid mixed electrolyte system. This design combines the chemical stability and mechanical strength advantages of the solid electrolyte, ensures the reliability and safety of the device, and effectively overcomes the difficulties of traditional liquid electrolytes in the packaging process. While maintaining the high stability and safety of the solid electrolyte on the edges, the main part of the device still retains the high ionic conductivity of the liquid electrolyte, ensuring the excellent color change speed and effect of the electroreflective device. The technology of the present invention will open up a new path for the in-depth research and application of electroreflective technology and provide technical support for the large-scale and industrialization of electroreflective devices. By providing a method for precise control of a specific area, a new path is opened up for the in-depth research and application of electroreflective technology. Scientific analysis and experimental results have consistently proved the technical effect of the present invention, which has shown outstanding advantages in improving social benefits, economic benefits and technological progress.

[0036] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the disclosure of the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0037] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel fast-response electro-reflective device, characterized in that: It includes a substrate layer, an electrode layer, an electrolyte layer, an electrode layer and a packaging layer arranged in sequence from bottom to top; The electrolyte layer includes a non-solidified area at the center and a solidified area at the edge; The substrate layer is a transparent substrate, and the electrode layer is a transparent conductive layer.

2. A novel fast-response electro-reflective device according to claim 1, characterized in that: The thickness of the electrolyte layer is 10um~1.5mm.

3. The novel fast-response electro-reflective device according to claim 1, characterized in that: In the electrolyte layer, the components of the electrolyte include an organic solvent, an electrolyte salt, an additive, a polymer matrix and an initiator.

4. The novel fast-response electro-reflective device according to claim 1, characterized in that: The substrate layer is a glass substrate; the substrate layer and the packaging layer are made of the same material; the electrode layer is made of ITO electrode, Pt electrode or silver nanowire.

5. A method for preparing a novel fast-response electro-reflective device according to any one of claims 1 to 4, characterized in that: The specific steps include: S1. Preparation of an electrolyte: mixing an organic solvent, an electrolyte salt, an additive, a polymer matrix and an initiator to obtain an electrolyte; S2. Preparation of electrode box; specifically comprising the following sub-steps: S201. Clean the transparent substrate, dry it, and obtain a substrate layer; S202. The surface of the substrate layer is coated by sputtering to obtain an electrode layer; S203. Prepare a polytetrafluoroethylene gasket, place the polytetrafluoroethylene gasket between two electrode layers placed opposite to each other; seal the edges of both sides of the polytetrafluoroethylene gasket in parallel, remove the polytetrafluoroethylene gasket after sealing, and seal one of the remaining two sides to form an electrode box with a single-side opening; S3. Device packaging and curing: The electrolyte prepared in step S1 is injected into the electrode box prepared in step S2, and one side of the injection port is sealed; A light-proof mold is used to cover the non-cured area, and the cured area is photo-induced or thermally induced to cure, so that the liquid electrolyte in the cured area is converted into a solid electrolyte, thereby completing the device preparation.

6. The method for preparing a novel fast-response electro-reflective device according to claim 5, characterized in that: The initiator is a photoinitiator or a thermal initiator; the photoinitiator is Irgacure 184, Irgacure 651, triphenylsulfonium hexafluorophosphate or diphenyl mercaptan; the thermal initiator is azobisisobutyronitrile, benzoyl peroxide or sodium nitrite.

7. The method for preparing a novel fast-response electro-reflective device according to claim 6, characterized in that: The step S1 includes the following sub-steps: S101. The electrolyte salt and the additive are mixed in proportion, added to the organic solvent, and stirred for more than 3 hours to ensure a uniform mixture; S102. Add 5 to 30 wt% of the total mass of the electrolyte to the mixture, and continue stirring for more than 3 hours until uniformly dispersed; S103. Add 0.1-1 wt% of the total mass of the electrolyte as a photoinitiator or a thermal initiator, stir until evenly distributed, and obtain an electrolyte.

8. The method for preparing a novel fast-response electro-reflective device according to claim 7, characterized in that: The electrolyte salt in step S1 is silver nitrate, lithium perchlorate, lithium tetrafluoroborate, lithium hexafluorophosphate or trichloroaluminic acid; the additive is cupric chloride, tetrabutylammonium bromide and / or lithium bromide; the organic solvent is propylene carbonate, ethylene carbonate, dimethyl carbonate, N,N-dimethylformamide, ethyl methyl carbonate or N-methyl-2-pyrrolidone; the polymer matrix includes neopentyl glycol diacrylate, ethylene glycol dimethacrylate, hydroxyethyl acrylate and / or trimethylolpropane triacrylate.

9. The method for preparing a novel fast-response electro-reflective device according to claim 7, characterized in that: In step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10wt% of the total mass of the electrolyte; the photoinitiator is Irgacure 184, accounting for 0.5wt% of the total mass of the electrolyte; In the step S3, a photo-induced curing method is adopted, and an ultraviolet lamp matching the wavelength of the photoinitiator is used to irradiate the curing area, and the irradiation time is 3 to 10 minutes.

10. The method for preparing a novel fast-response electro-reflective device according to claim 7, characterized in that: In step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10wt% of the total mass of the electrolyte; the thermal initiator is azobisisobutyronitrile; In the step S3, a heat-induced curing method is adopted, the heating temperature is 60-90° C., and the heating time is 1-3 hours.

Images