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Bifunctional device based on tungsten trioxide and prussian blue

A tungsten trioxide, Prussian blue technology, used in instruments, nonlinear optics, optics, etc.

Inactive Publication Date: 2017-09-12
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the integration of tungsten trioxide and Prussian blue in a device that has both electrochromic and capacitive properties.

Method used

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  • Bifunctional device based on tungsten trioxide and prussian blue
  • Bifunctional device based on tungsten trioxide and prussian blue
  • Bifunctional device based on tungsten trioxide and prussian blue

Examples

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Embodiment 1

[0049] In this example, a dual-function device based on tungsten trioxide and Prussian blue was prepared by magnetron sputtering technology and electrodeposition technology, and its electrochromic and capacitive properties were characterized.

[0050] Tungsten trioxide negative electrode, such as figure 1 As shown, it includes a glass substrate 1, a transparent conductive layer 2, and a tungsten trioxide thin film 3.

[0051] The preparation method of the above-mentioned tungsten trioxide negative electrode comprises the following steps:

[0052] (a) Cut the fluorine-doped tin oxide (FTO) glass substrate into a size of 2.5cm×1.5cm, ultrasonically clean it in acetone, ethanol, and deionized water for 15 minutes, and dry it at 60°C for later use;

[0053] (b) WO with a purity greater than 99.99% 3 The ceramic block is used as the target, and the FTO transparent conductive glass substrate is placed in the reaction chamber of the magnetron sputtering device, and the background v...

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Abstract

The invention relates to a bifunctional device based on tungsten trioxide and prussian blue. A tungsten trioxide film serves as a cathode, a prussian blue film serves as an anode, and an electrolyte is filled between the cathode and the anode, so that the bifunctional device is formed. The bifunctional device has electrochromism and capacitive performance, and the energy storage level of the bifunctional device can be visually displayed by color change. The device disclosed by the invention can serve as an electrochromism device and can also serve as a capacitor device, and is a bifunctional device with electrochromism and capacitive performance.

Description

technical field [0001] The invention belongs to the technical field of functional materials and devices, and in particular relates to a dual-function device based on tungsten trioxide and Prussian blue and a preparation method thereof. Background technique [0002] Electrochromic (Electrochromic) phenomenon refers to the reversible change of the material between the coloring and fading states through the injection and extraction of ions or electrons under the action of alternating voltage, which is manifested in the reversible color and transparency of the material in appearance. Variety. Supercapacitors (Supercapacitors), as an electrochemical energy storage device, are mainly divided into electrochemical double layer capacitors and pseudocapacitors. Among them, pseudocapacitors store charges through redox reactions that occur on and near the surface of active materials. Electrochromic devices and pseudocapacitors have the same device structure and undergo the same redox ...

Claims

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Application Information

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IPC IPC(8): G02F1/15G02F1/153G02F1/155
CPCG02F1/1506G02F1/153G02F1/155G02F2001/1517
Inventor 李效民毕志杰高相东徐小科陈永博何晓利
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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