Preparation method and application of titanium dioxide/carbon nanoflower composite PDMS film

A titanium dioxide and carbon nanotechnology, applied in triboelectric generators, coatings and other directions, can solve the problems of insufficient and limited output performance of frictional conversion of dielectric properties, and achieve the enhancement of interface polarization effect, improvement of dielectric properties, and simple preparation process. Effect

Active Publication Date: 2021-08-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its dielectric properties and friction conversion output performance are slightly insufficient, which limits its application as an energy supply device.

Method used

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  • Preparation method and application of titanium dioxide/carbon nanoflower composite PDMS film
  • Preparation method and application of titanium dioxide/carbon nanoflower composite PDMS film
  • Preparation method and application of titanium dioxide/carbon nanoflower composite PDMS film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this example, titanium dioxide / carbon nanoflowers are used as filler, PDMS is used as matrix material, and a high-performance triboelectric energy conversion device is prepared by adopting the method used in the present invention.

[0046] The specific operation steps are as follows:

[0047](1) Add 2ml of titanyl sulfate dropwise into 23ml of glycerol and 41ml of ethanol solution; stir at room temperature for 1 hour to obtain a clear solution, which is placed in a 100ml reactor and reacted at 110°C for 48h. After the reaction, the white powder was obtained by centrifugation, washed with water and ethanol, and then dried in an oven at 60°C to obtain the titanium glycerol salt precursor. Then the titanium glycerol salt precursor was placed in a muffle furnace and calcined at 330 °C for 1 h with a heating rate of 1 °C / min. Then it was placed in a tube furnace and calcined at 575° C. for 2 h under the protection of argon, with a heating rate of 2° C. / min. Titanium dio...

Embodiment 2

[0052] In this example, titanium dioxide / carbon nanoflowers are used as filler, PDMS is used as matrix material, and a high-performance triboelectric energy conversion device is prepared by adopting the method used in the present invention.

[0053] The specific operation steps are as follows:

[0054] (1) Add 2ml of titanyl sulfate dropwise into 23ml of glycerol and 41ml of ethanol solution; stir at room temperature for 1 hour to obtain a clear solution, which is placed in a 100ml reactor and reacted at 110°C for 48h. After the reaction, the white powder was obtained by centrifugation, washed with water and ethanol, and then dried in an oven at 60°C to obtain the titanium glycerol salt precursor. Then the titanium glycerol salt precursor was placed in a muffle furnace and calcined at 330 °C for 1 h with a heating rate of 1 °C / min. Then it was placed in a tube furnace and calcined at 575° C. for 2 h under the protection of argon, with a heating rate of 2° C. / min. Titanium di...

Embodiment 3

[0059] In this example, titanium dioxide / carbon nanoflowers are used as filler, PDMS is used as matrix material, and a high-performance triboelectric energy conversion device is prepared by adopting the method used in the present invention.

[0060] The specific operation steps are as follows:

[0061] (1) Add 2ml of titanyl sulfate dropwise into 23ml of glycerol and 41ml of ethanol solution; stir at room temperature for 1 hour to obtain a clear solution, which is placed in a 100ml reactor and reacted at 110°C for 48h. After the reaction, the white powder was obtained by centrifugation, washed with water and ethanol, and then dried in an oven at 60°C to obtain the titanium glycerol salt precursor. Then the titanium glycerol salt precursor was placed in a muffle furnace and calcined at 330 °C for 1 h with a heating rate of 1 °C / min. Then it was placed in a tube furnace and calcined at 575° C. for 2 h under the protection of argon, with a heating rate of 2° C. / min. Titanium di...

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Abstract

The invention relates to an energy conversion material and device technology, and aims to provide a preparation method and application of a titanium dioxide / carbon nanoflower composite PDMS film. The preparation method comprises the following steps of: mixing cyclohexane and polydimethylsiloxane, and stirring until the mixture is clear; dispersing a titanium dioxide / carbon nanoflower filling material in the solution to obtain a uniform suspension; and adding a curing agent and stirring, coating an acrylic plate with an aluminum electrode with the suspension in a spin coating manner, and drying and forming to obtain a film-shaped composite material. The method is simple in preparation process, high in repeatability and suitable for mass production. The interface polarization effect can be remarkably improved, and a large amount of local micro-capacitance is constructed in the composite material by an in-situ introduced conductive carbon simple substance, so that the dielectric property is synergistically improved, the surface charge density is improved, and the output performance of a friction nano-generator is further improved. The output performance of the friction nano- generator device can be regulated and controlled by adjusting the content of the titanium dioxide / carbon nanoflowers; and low-frequency mechanical energy can be converted into electric energy.

Description

technical field [0001] The invention relates to a preparation method of a titanium dioxide / carbon nanoflower composite PDMS flexible nano friction generator, which belongs to the technical field of energy conversion materials and devices. Background technique [0002] In recent years, the rapid development of electronic equipment presents a trend of miniaturization, light weight, intelligence, mobility and multi-function. The number of small electronic products and sensors is huge and widely distributed, and it is difficult to meet the demand for energy and device miniaturization only by using traditional batteries for driving. As a new type of green energy, triboelectric nanogenerators have broad application prospects in wearable electronic devices, Internet of Things, environment, medical care and other fields. [0003] The principle of triboelectric nanogenerator comes from Maxwell displacement current. The vertical contact-separation triboelectric nanogenerator is base...

Claims

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Application Information

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IPC IPC(8): H02N1/04C09D183/04C09D7/61
CPCH02N1/04C09D183/04C09D7/61C09D7/70C08K3/22C08K3/04C08K7/00
Inventor 张启龙张钊姚丽琴申乾宏杨辉陈露
Owner ZHEJIANG UNIV
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