Flexible electrogenerated variable emissivity device and preparation method thereof

A technology of emissivity and flexible electricity, applied in instruments, protective equipment, offensive equipment, etc., can solve the problems of limited infrared modulation ability and difficulty in achieving flexibility, and achieve the effect of improving cycle stability

Active Publication Date: 2020-05-19
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing thermal infrared adaptive camouflage technology is either difficult to achieve flexibility, or has limited infrared modulation ability under flexible conditions

Method used

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  • Flexible electrogenerated variable emissivity device and preparation method thereof
  • Flexible electrogenerated variable emissivity device and preparation method thereof
  • Flexible electrogenerated variable emissivity device and preparation method thereof

Examples

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preparation example Construction

[0054] The present invention also proposes a method for preparing a flexible electrovariable emissivity device, comprising the following steps:

[0055] S1: modifying the surface of the flexible polymer film and / or plating a transition layer on one side of the film;

[0056] S2: Depositing a metal film on one side of the surface-modified flexible polymer film to obtain a working electrode;

[0057] or,

[0058] Depositing a metal film on the transition layer side of the flexible polymer film or the surface-modified flexible polymer film to obtain a working electrode;

[0059] S3: preparing a gel electrolyte, and soaking the porous diaphragm with the gel electrolyte to obtain a gel electrolyte layer;

[0060] S4: directly depositing a conductive layer on one side of the substrate to obtain a counter electrode;

[0061] S5: The side of the working electrode obtained in S2 deposited with a metal thin film is stacked with the side of the gel electrolyte layer obtained in S3, an...

Embodiment 1

[0077] This embodiment proposes a flexible electrovariable emissivity device, such as figure 1 As shown, including working electrode, gel electrolyte layer and counter electrode from top to bottom;

[0078] The working electrode comprises a polypropylene film and a metal film, the polypropylene film is a surface-modified film, and the metal film is deposited on the surface-modified film;

[0079] The electrolyte layer includes a porous membrane and an electrolyte, and the electrolyte is infiltrated in the porous membrane; the electrolyte includes an electrochromic material containing metal ions and a solvent, and the metal ions are metals capable of reversible electrodeposition and dissolution ions and the metal of the metal ion is different from the metal used for the metal thin film.

[0080] In this embodiment, the modified polypropylene film is a polypropylene film with oxygen-containing functional groups introduced on the surface, with a thickness of 30 μm; the metal fil...

Embodiment 2

[0096] This embodiment proposes a flexible electrovariable emissivity device, which sequentially includes a working electrode, a gel electrolyte layer, and a counter electrode from top to bottom;

[0097] The working electrode comprises a polyester film and a metal film, one side of the polyester film is plated with a transition layer, and the metal film is deposited on the transition layer;

[0098] The electrolyte layer includes a porous membrane and an electrolyte, and the electrolyte is infiltrated in the porous membrane; the electrolyte includes an electrochromic material containing metal ions and a solvent, and the metal ions are metals capable of reversible electrodeposition and dissolution ions and the metal of the metal ion is different from the metal used for the metal thin film.

[0099] In the present embodiment, the thickness of the polyester film is 5 μm; the metal film is a ruthenium (Ru) film with a thickness of 2 nm; the gel electrolyte in the gel electrolyte ...

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Abstract

The invention discloses a flexible electrogenerated variable emissivity device and a preparation method thereof. The flexible electrogenerated variable emissivity device sequentially comprises a working electrode, a gel electrolyte layer and a counter electrode from top to bottom, wherein the working electrode comprises a flexible polymer film and a metal film, the flexible polymer film is a surface-modified film and/or a film of which a lower side is plated with a transition layer, and the metal film is deposited on the surface-modified film or the transition layer; the electrolyte layer comprises a porous diaphragm and an electrolyte, and the electrolyte is soaked in the porous diaphragm; wherein the electrolyte comprises an electrochromic material containing metal ions and a solvent, the metal ions are metal ions capable of realizing reversible electrodeposition and dissolution, and the metal of the metal ions is different from the metal for the metal film. The preparation method comprises the steps of respectively preparing the working electrode, the gel electrolyte layer and the counter electrode and assembly. The device provided by the invention is flexible and uniform in change; and the preparation method provided by the invention is simple in process and short in preparation period, and can be used for industrial production.

Description

technical field [0001] The invention relates to the technical field of electrovariable emissivity devices, in particular to a flexible electrovariable emissivity device and a preparation method. Background technique [0002] With the rapid development of optoelectronic science and technology, military camouflage targets are facing the threat of multi-band monitoring and reconnaissance such as visible light, infrared, and radar. Infrared imaging technology is widely used in the military field due to its good concealment, long night vision distance, strong anti-interference ability, and wide applicability, posing a serious threat to military targets. Through the thermal infrared adaptive camouflage technology, eliminating, reducing, changing or simulating the difference in radiation characteristics between the target and the background in the two thermal infrared atmospheric windows (3-5μm and 7.5-13μm) is an effective way to deal with thermal infrared detection. means. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/15G02F1/153G02F1/155G02F1/157
CPCG02F1/15G02F1/153G02F1/157G02F1/155C23C14/02C23C14/20F41H3/02G02F1/1508Y02B30/00C23C14/025C23C14/30G02F1/13439G02F1/1506G02F2001/1555G02F2203/11G02F2203/48
Inventor 刘东青李铭洋程海峰彭亮彭任富
Owner NAT UNIV OF DEFENSE TECH
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