Carbon fiber/titanium dioxide photoelectric composite material and preparation method and application thereof

A technology of titanium dioxide and composite materials, which is applied in the field of electrochemical energy storage, can solve the problems of low conductivity and limited application range, and achieve the effects of improving electrochemical performance, high repeatability, and large application potential

Pending Publication Date: 2022-04-19
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with electrode materials such as conductive polymers and carbon materials, TiO 2

Method used

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  • Carbon fiber/titanium dioxide photoelectric composite material and preparation method and application thereof
  • Carbon fiber/titanium dioxide photoelectric composite material and preparation method and application thereof
  • Carbon fiber/titanium dioxide photoelectric composite material and preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0030] A carbon fiber / titanium dioxide photoelectric composite material, the preparation method of which comprises the following steps:

[0031] 1) Activation of carbon fiber:

[0032] Add carbon fiber to the 2 O 2 solution (30wt%) with H 2 SO 4 solution (95wt%) composed of H 2 O 2 / H 2 SO 4 In the mixed solution, activated by stirring at room temperature for 1-3 hours, after taking out, washed with water and ultrasonic to obtain activated carbon fibers; among which carbon fibers, H 2 O 2 solution, H 2 SO 4 The feeding ratio of the solution is 2mg:3mL:(3-9)mL;

[0033] 2) Preparation of titanium-containing precursor:

[0034] Mix Pluronic F127 and tetrahydrofuran, then add 99.5wt% acetic acid solution, 36wt% hydrochloric acid solution, 98.5wt% tetrabutyl titanate, and water to mix uniformly; then heat the resulting mixed solution at 45-60°C for 24-48h , that is, the titanium-containing precursor is obtained;

[0035] Among them, the feeding ratio of Pluronic F127...

Example Embodiment

[0041] Example 1:

[0042] A carbon fiber / titanium dioxide photoelectric composite material, the preparation method of which comprises the following steps:

[0043] 1) Add 2mg carbon fiber to 3mL H 2 O 2 (30%), 3 mL H 2 SO 4 (95%) in the mixed solution, stirred and activated at room temperature for 1 h, taken out and washed with water and sonicated at 5Khz for 30 s to obtain activated carbon fibers;

[0044] 2) 1.5g of titanium-containing precursor, 20mL of ethanol and 10mL of glycerol were sequentially added to the 50mL hydrothermal kettle, and stirred and mixed evenly; then 2mg of activated carbon fibers were added, the hydrothermal kettle was closed, and a solvothermal reaction was carried out at 100 ° C for 15h, After taking out, washed with water, and dried at 40 °C for 4 h to obtain a solvothermal product;

[0045] 3) The solvothermal product was placed in a nitrogen atmosphere, heated to 300°C at a heating rate of 10°C / min, and calcined at a constant temperature for ...

Example Embodiment

[0048] Example 2:

[0049] A carbon fiber / titanium dioxide photoelectric composite material, the preparation method of which comprises the following steps:

[0050] 1) Add 2mg carbon fiber to 3mL H 2 O 2 (30%), 6 mL H 2 SO 4 (95%) in the mixed solution, and stirred and activated at room temperature for 2h, then taken out and washed with water and ultrasonicated at 5Khz for 30s to obtain activated carbon fibers;

[0051] 2) Add 2.0g of titanium-containing precursor, 24mL of ethanol and 6mL of glycerol to the 50mL hydrothermal kettle in turn, and stir and mix evenly; then add 2mg of activated carbon fibers, seal the hydrothermal kettle, and carry out solvothermal reaction at 150°C for 20h, After being taken out, washed with water, and dried at 60 °C for 2 h to obtain a solvothermal product;

[0052] Wherein, the titanium-containing precursor is prepared by the following method:

[0053] Mix 1.5g of Pluronic F127 with 20mL of tetrahydrofuran; add 2.5mL of acetic acid (99.5%...

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Abstract

The invention relates to a carbon fiber/titanium dioxide photoelectric composite material as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing activated carbon fiber with a titanium-containing precursor, carrying out solvothermal reaction, separating, purifying and calcining at high temperature to obtain the carbon fiber/titanium dioxide photoelectric composite material. Compared with the prior art, the preparation method has the advantages that photoresponsiveness and electrochemistry are ingeniously combined together, TiO2 generates holes and photon-generated carriers by applying certain illumination, the electrochemical performance of the TiO2 is further improved, and the preparation method has great application potential in the field of electrochemical energy storage.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage, and relates to a carbon fiber / titanium dioxide photoelectric composite material and a preparation method and application thereof. Background technique [0002] Fossil fuels are the main part of the world's primary energy. With the rapid development of human society and the rapid growth of industrial production capacity, the consumption of fossil fuels is also increasing sharply. Excessive consumption will cause energy depletion, and cause a series of environmental problems such as greenhouse effect, acid rain, and industrial pollution. In the face of these problems, the development of environmentally friendly, clean, safe and stable energy technology is a scientific problem that researchers need to solve urgently. The development of related electrochemical energy storage devices with high energy density, high power density and long life has become the top priority, and new...

Claims

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Application Information

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IPC IPC(8): D06M11/46D06M11/55C01G23/053D06M101/40
CPCD06M11/46D06M11/55C01G23/053D06M2101/40C01P2004/80
Inventor 韩生黄锐张君董振标
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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