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Electrochromic material as well as preparation method and application thereof

An electrochromic material and material layer technology are applied in the field of electrochromic materials and their preparation to achieve the effects of convenient electronic access, improved electron transport performance, and easy large-scale industrial production.

Active Publication Date: 2019-07-09
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although the above studies have utilized the high specific surface area and porous space of nanostructures, these structures are still disordered, and the order of nanostructures cannot be better utilized to provide convenient channels for electron transport.
In addition, there are no literature and patent reports on combining ordered nanotube array structures with conductive polymers and using them in the field of electrochromism.

Method used

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  • Electrochromic material as well as preparation method and application thereof
  • Electrochromic material as well as preparation method and application thereof
  • Electrochromic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A kind of preparation of electrochromic material, comprises the steps:

[0057] 1) Polish the platinum sheet with 2000-mesh sandpaper, clean it with a mixture of dichromic acid, rinse it with deionized water and absolute ethanol, and use it as a counter electrode;

[0058] Saturated calomel electrode was wiped clean with deionized water and ethanol as a reference electrode;

[0059] ITO glass was ultrasonicated for 15 min each in acetone, absolute ethanol, and deionized water, and dried as a working electrode.

[0060] 2) Weigh 0.0932g of zinc acetate and dissolve it in 100mL of deionized water to form a 5.0mmol / L zinc acetate solution;

[0061] Weigh 1.4910g potassium chloride and dissolve it in 100mL deionized water to make a 0.2mol / L potassium chloride solution;

[0062] Get above-mentioned zinc acetate solution and each 17.5mL of potassium chloride solution and mix, zinc acetate concentration after mixing is 2.5mmol / L, and potassium chloride concentration is 0.1mo...

Embodiment 2

[0071] A kind of preparation of electrochromic material, step is the same as embodiment 1, and difference is:

[0072] In the preparation of the ZnO nanorod array in step 2), a voltage of -1.0V.vs.SCE was applied for 100s to prepare the ZnO nanorod array. The length of the nanorods is 0.10 μm, the diameter is 0.10 μm, and the arrangement is sparse under the scanning electron microscope.

[0073] In step 5), apply a voltage of 1.0V.vs.SCE for 40s. The average thickness of the grown PEDOT is 1.40 μm, and the cross-section is observed through a scanning electron microscope, and the surface has certain undulations.

[0074] Carry out performance test to the prepared electrochromic material:

[0075] The method steps are the same as in Example 1, and the contrast ratio of the test is 10.16%.

Embodiment 3

[0077] A kind of preparation of electrochromic material, step is the same as embodiment 1, and difference is:

[0078] In the preparation of the ZnO nanorod array in step 2), a voltage of -1.0V.vs.SCE was applied for 4000s to prepare the ZnO nanorod array. Under the scanning electron microscope, the length is 1.50 μm, the diameter is 400 nm, and the array is neat and dense.

[0079] In step 5), apply a voltage of 1.0V.vs.SCE for 40s. The average thickness of the grown PEDOT is 1.60 μm, and the cross-section is observed through a scanning electron microscope, and the surface has certain undulations.

[0080] Carry out performance test to the prepared electrochromic material:

[0081] The method steps are the same as in Example 1, and the contrast ratio of the test is 12.55%.

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Abstract

The invention discloses an electrochromic material and a preparation method and application thereof. The electrochromic material is a ZnO nano array-poly(3,4-dioxyethyl)thiophene composite material. The ZnO nano array-poly(3,4-dioxethyl)thiophene composite material comprises a ZnO nano array layer and a poly(3,4-dioxethyl)thiophene material layer formed on the surface of the ZnO nano array layer.The electrochromic material is prepared by forming a ZnO nano array perpendicular to a substrate on the substrate, and uniformly compounding poly(3,4-dioxethyl)thiophene on the surface of the ZnO nanoarray. The electrochromic material disclosed by the invention has an ordered nano array structure and a high specific surface area, provides good electric contact and an electronic path, and improvesthe electronic transmission performance of a polymer in electrochromic application.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials. More specifically, it relates to an electrochromic material and its preparation method and application. Background technique [0002] Electrochromism refers to the phenomenon that the optical properties of materials (reflectivity, transmittance, etc.) undergo stable and reversible color changes under the action of an applied electric field, and the appearance is manifested as reversible changes in color and transparency. Electrochromic materials have attracted more and more attention due to their potential applications in information display, information storage, smart windows and other related fields, and some electrochromic materials have certain ability to control the emissivity of infrared and microwave bands. [0003] Organic materials have the advantages of fast discoloration, rich color changes, low driving voltage, and low energy consumption. Poly(3,4-dioxyethyl)thiophene...

Claims

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Application Information

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IPC IPC(8): C09K9/00
CPCC09K9/00C09K2211/1458
Inventor 胡秀杰刘胜男孙承华周树云
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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