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Preparation method of gradient titanium dioxide-based photovoltaic device

A titanium dioxide and device technology, which is applied in the field of water evaporation power generation device preparation, can solve problems such as ecological damage and cost increase, and achieve the effects of increasing water absorption performance, improving output voltage, and easy availability of materials

Pending Publication Date: 2020-08-28
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional water energy utilization mode is greatly restricted by natural conditions and is easily affected by external factors such as terrain and climate. The construction and use of large-scale facilities and equipment may easily lead to ecological damage and cost increase

Method used

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  • Preparation method of gradient titanium dioxide-based photovoltaic device
  • Preparation method of gradient titanium dioxide-based photovoltaic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Disperse titanium dioxide nanoparticles with an average particle size of 10nm, 40nm, 100nm, 150nm, 200nm, 300nm, 500nm, and 1000nm in ethanol, the mass ratio of titanium dioxide to ethanol is 7:3, and ultrasonic 20min to obtain different sizes TiO2 nanoparticle slurries.

[0025] (2) Coat two carbon electrodes on the base polyester resin film, the electrode width is 1cm, the electrode length is 20cm, and the interval between the upper electrode and the lower electrode is 4cm. After the electrodes are dried, different carbon electrodes are coated from bottom to top. Size titanium dioxide nanoparticle slurry, the bottom is small-sized nanoparticles, and the size of the nanoparticles increases gradually from bottom to top. After one area is completely dry, the next area is sequentially coated, and the width of each area is 0.5cm.

[0026] (3) After the ethanol is completely volatilized, a gradient titania-based hydrovoltaic device is obtained, and the thickness of the ...

Embodiment 2

[0029] (1) Titanium dioxide nanoparticles with an average particle size of 10nm, 40nm, 200nm, and 500nm were dispersed in ethanol, the mass ratio of titanium dioxide to ethanol was 7:3, and ultrasound was performed for 20 minutes to obtain titanium dioxide nanoparticle slurries of different sizes.

[0030] (2) Coat two carbon electrodes on the base polyester resin film, the electrode width is 1cm, the electrode length is 20cm, and the interval between the upper electrode and the lower electrode is 4cm. After the electrodes are dried, different carbon electrodes are coated from bottom to top. Size titanium dioxide nanoparticle slurry, the bottom is small-sized nanoparticles, and the size of the nanoparticles increases gradually from bottom to top. After one area is completely dry, the next area is sequentially coated, and the width of each area is 1cm.

[0031] (3) After the ethanol is completely volatilized, a gradient titania-based hydrovoltaic device is obtained, and the thic...

Embodiment 3

[0034] (1) the titanium dioxide nanoparticles that the average particle size is 10nm, 40nm, 200nm, 500nm and the diameter are 5nm respectively, and the carbon nanofibers that length is 2 μ m are dispersed in ethanol, and the mass ratio of titanium dioxide and carbon nanofibers is 10: 1, The mass ratio of the total mass of titanium dioxide and carbon nanofibers to ethanol was 7:3, and the composite slurry of titanium dioxide and carbon nanofibers was obtained by ultrasonication for 30 minutes.

[0035] (2) Coat two carbon electrodes on the base polyester resin film, the electrode width is 1cm, the electrode length is 20cm, and the interval between the upper electrode and the lower electrode is 4cm. After the electrodes are dried, different carbon electrodes are coated from bottom to top. TiO2 and carbon nanofiber composite slurry with small size nanoparticles at the bottom, and the size of the nanoparticles increases gradually from bottom to top. After one area is completely dry...

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Abstract

The invention provides a preparation method of a gradient titanium dioxide-based photovoltaic device. The preparation method comprises the following steps: respectively dispersing titanium dioxide nanoparticles with different sizes into a solvent to obtain titanium dioxide nanoparticle slurries; and coating a substrate with titanium dioxide nanoparticle slurries of different sizes from bottom to top to obtain the gradient titanium dioxide-based photovoltaic device, wherein small-size nanoparticles are arranged at the bottom, and the sizes of the nanoparticles are gradually increased from bottom to top. According to the invention, the photovoltaic device prepared by the method disclosed by the invention can spontaneously generate electric energy by virtue of the capillary action of the titanium dioxide coating and water evaporation, does not need additional energy input, is highly spontaneous in power generation mode, is less limited by the environment, has high energy output, can be maintained for a long time, and is suitable for various application scenes.

Description

technical field [0001] The invention relates to the field of preparation of water evaporation power generation devices, in particular to a preparation method of gradient titania-based hydrovoltaic devices. Background technique [0002] Water covers about 71% of the Earth's surface and accounts for about 70% of the human body by weight. Water is closely related to energy and maintains the energy cycle of the earth system, the temperature balance of organisms, and is a natural energy absorber, energy storage, transducer and energy transmitter. Nearly 70% of the energy from solar radiation reaching the surface is absorbed by water, and the annual average power of water absorbing and releasing energy on the earth is as high as 60 trillion kilowatts, which is 3 orders of magnitude higher than the average annual energy consumption of all human beings. Water stores the absorbed heat in the form of thermal energy and kinetic energy, and converts the stored solar energy into mechani...

Claims

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Application Information

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IPC IPC(8): H02N3/00B82Y30/00B82Y40/00
CPCH02N3/00B82Y30/00B82Y40/00
Inventor 苗中正田华雨吴昊
Owner YANCHENG TEACHERS UNIV
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