Mesoporous nano-crystal tungsten trioxide electrochromic energy-storing film and preparation method thereof

A tungsten trioxide and electrochromic technology, applied in the direction of coating, etc., can solve the problems of low capacity, poor cycle performance, slow discoloration speed, etc., achieve high capacity, satisfy performance and life, and inhibit volume shrinkage

Inactive Publication Date: 2018-03-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, crystalline tungsten oxide has good cycle stability, but low capacity and slow discoloration speed; altho

Method used

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  • Mesoporous nano-crystal tungsten trioxide electrochromic energy-storing film and preparation method thereof
  • Mesoporous nano-crystal tungsten trioxide electrochromic energy-storing film and preparation method thereof
  • Mesoporous nano-crystal tungsten trioxide electrochromic energy-storing film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) FTO conductive glass (Shenzhen Disprey Photoelectric Material Co., Ltd., Rs≤10ohmTr> 85%) Use acetone, deionized water and ethanol to clean ultrasonically for 10 minutes, and blow clean with nitrogen to obtain clean FTO conductive glass;

[0036] (2) Combine 2.3793g tungsten hexachloride and 2.3436g F127 (Pluronic F127, EO 106 -PO 70 -EO 106 ,M w =12600, Aldrich) was added to 30ml absolute ethanol and stirred to form solution A, WCl 6 The concentration in solution A is 0.2mol L -1 , The concentration of F127 in solution A is 6.2mmol L -1 ;

[0037] (3) The solution A obtained in step (2) is aged in a water bath at 45°C for 24 hours to form a dip coating solution;

[0038] (4) Insert the clean FTO conductive glass vertically into the dipping solution, and set it to 4mm s -1 Pull at a constant speed until the FTO conductive glass completely leaves the solution to obtain FTO conductive glass covered with a sol film;

[0039] (5) Transfer the sol film obtained in step (4) to an ...

Embodiment 2

[0046] (1) FTO conductive glass (Shenzhen Disprey Photoelectric Material Co., Ltd., Rs≤10ohmTr> 85%) Use acetone, deionized water and ethanol to clean ultrasonically for 10 minutes, and blow clean with nitrogen to obtain clean FTO conductive glass;

[0047] (2) Add 2.974g tungsten hexachloride and 3.024g F127 to 30ml absolute ethanol and stir to form solution A, WCl 6 The concentration in solution A is 0.25 mol L -1 , The concentration of F127 in solution A is 8mmol L -1 ;

[0048] (3) The solution A obtained in step (2) is aged in a water bath at 50°C for 22 hours to form a dip coating solution;

[0049] (4) Insert the cleaned FTO conductive glass vertically into the dip coating solution, and set it to 6mm s -1 Pull at a constant speed until the FTO conductive glass completely leaves the solution to obtain FTO conductive glass covered with a sol film;

[0050] (5) Transfer the sol film obtained in step (4) to an oven and dry it at 50°C for 22 hours to form a gel film;

[0051] (6) The ...

Embodiment 3

[0057] (1) FTO conductive glass (Shenzhen Disprey Photoelectric Material Co., Ltd., Rs≤10ohmTr> 85%) Use acetone, deionized water and ethanol to clean ultrasonically for 10 minutes, and blow clean with nitrogen to obtain clean FTO conductive glass;

[0058] (2) Add 3.57g tungsten hexachloride and 3.78g F127 to 30ml absolute ethanol and stir to form solution A, WCl 6 The concentration in solution A is 0.3mol L -1 , The concentration of F127 in solution A is 10mmol L -1 ;

[0059] (3) The solution A obtained in step (2) is aged in a water bath at 55°C for 20 hours to form a dip coating solution;

[0060] (4) Insert the clean FTO conductive glass vertically into the dipping solution, and set it to 8mm s -1 Pull at a constant speed until the FTO conductive glass completely leaves the solution to obtain FTO conductive glass covered with a sol film;

[0061] (5) Transfer the sol film obtained in step (4) to an oven and dry it at 60°C for 18 hours to form a gel film;

[0062] (6) The gel film ...

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Abstract

The invention discloses a mesoporous nano-crystal tungsten trioxide electrochromic energy-storing film and a preparation method thereof. The method comprises the following steps: dissolving tungsten hexachloride and F127 into absolute ethanol, stirring and ageing to form a dip-coating solution; vertically inserting a conductive substrate into the dip-coating solution, and lifting at constant speeduntil the substrate completely departs from the solution to obtain a conductive substrate covered with a sol film; transferring the sol film to a drying oven to dry to form a gel film; performing high-temperature heat treatment on the gel film and removing a template agent F127 to obtain the mesoporous nano-crystal tungsten trioxide electrochromic energy-storing film. The film prepared by the preparation method has excellent electrochromic property and energy storage property and high cycling stability, can realize large-area preparation and can realize industrialized production easily.

Description

Technical field [0001] The invention relates to the technical field of electrochromic energy storage materials, in particular to a mesoporous nanocrystalline tungsten trioxide electrochromic energy storage film and a preparation method thereof. Background technique [0002] Electrochromics (EC) refers to the phenomenon that the optical properties of materials change reversibly under the action of an external electric field. The electrochromic material can change the color and optical transmittance under low voltage, and can keep the faded state in the open state. With this characteristic, electrochromic devices are widely used in energy saving, optical control and other fields. Smart window is one of its most representative applications. At present, the most commonly used electrochromic materials in industrial production are tungsten trioxide and nickel dioxide. Among them, as a cathode electrochromic material, tungsten trioxide has been extensively studied by people due to it...

Claims

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Application Information

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IPC IPC(8): C03C17/27
CPCC03C17/27C03C2217/219C03C2218/322
Inventor 王秀丽王伟齐涂江平夏新辉谷长栋
Owner ZHEJIANG UNIV
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