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Titanium dioxide and cobalt aluminum hydrotalcite heterojunction inorganic composite material and application with inorganic composite material as photo-charging supercapacitor

An inorganic composite material, titanium dioxide technology, applied in the direction of capacitor collector combination, electrodes, electrolytic components, etc.

Active Publication Date: 2019-10-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of solar energy is also limited by seasons, cloudy days and daytime.

Method used

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  • Titanium dioxide and cobalt aluminum hydrotalcite heterojunction inorganic composite material and application with inorganic composite material as photo-charging supercapacitor
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  • Titanium dioxide and cobalt aluminum hydrotalcite heterojunction inorganic composite material and application with inorganic composite material as photo-charging supercapacitor

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Experimental program
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Effect test

Embodiment 1

[0023] 1) Preparation of TiO by hydrothermal synthesis 2 Nanorods: Dissolve 15mL of H 2 The mixed solution of O and 15mL concentrated HCl is placed in the liner of the reaction kettle, and 450μL of tetraisopropyl titanate is taken with a pipette gun, and tetraisopropyl titanate is added dropwise while stirring at 500r / min, and the stirring is continued for 10min until the mixture Clarification; Ultrasonic treatment of FTO by acetone, ethanol and water for 15 minutes each, and then place conductive glass FTO in the mixed solution, the conductive side of FTO is facing down, and the mixed solution cannot immerse FTO; the liner is placed in the reaction kettle, Put it in a drying oven and heat it at 150°C, take it out for 9 hours, wash the FTO with water for three times, and finally put the FTO in a muffle furnace and heat it to 450°C at 10°C / min, keep it for 1h, cool down naturally, and dry it in a vacuum oven for 12h to get TiO grown on FTO 2 Nano stave;

[0024] 2) 0.60g cob...

Embodiment 2

[0028] 1. Same as embodiment 1

[0029] 2. Same as embodiment 1. The number of scanning cycles is 4, and the product is recorded as 4-TH.

Embodiment 3

[0031] 1. Same as embodiment 1

[0032]2. Same as embodiment 1. The number of scanning cycles is 6, and the product is recorded as 6-TH.

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Abstract

The present invention discloses a titanium dioxide and cobalt aluminum hydrotalcite heterojunction inorganic composite material and application with the inorganic composite material as a photo-charging supercapacitor. A hydrothermal method is used to grow TiO2 nanorods on the FTO; and the mixture of cobalt nitrate, aluminum nitrate and sodium nitrate is taken as an electrolyte, the FTO for growingthe TiO2 nanorods is taken as a working electrode, Ag / AgCl is taken as a reference electrode, and the Pt wire is taken as a counter electrode, and the cobalt aluminum hydrotalcite is deposited on theTiO2 nanorods by using a three-electrode method. The titanium dioxide and cobalt aluminum hydrotalcite heterojunction inorganic composite material prepared by the present invention has a simple operation, good stability and a strong light response; and the nanometer TiO2 is taken as a light absorber to convert light energy into chemical energy, the cobalt aluminum hydrotalcite is taken as an energy storage element to convert the chemical energy into the light energy, and under the illumination, the light energy is converted into the chemical energy to be stored in supercapacitors, so that thelimitation of solar energy by season and no light is broken through.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor preparation, and in particular relates to a TiO 2 A heterojunction inorganic composite material composed of nanorods and electrochemically deposited cobalt-aluminum hydrotalcite with different layers, and its performance evaluation as a photorechargeable supercapacitor. Background technique [0002] Solar energy provides human beings with clean, abundant and unlimited energy resources, and provides a green way to meet the global demand for carbon-free energy, sunlight provides us with a wide range of spectral applications, such as solar thermal, photovoltaic power generation, photovoltaic Chemical water splitting, photosynthesis and photocatalysis. However, to date, these solar energy harvesting and storage strategies are independently developed technologies. In addition, the use of solar energy is also limited by seasons, cloudy days and daylight. This is badly in need of one that can c...

Claims

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Application Information

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IPC IPC(8): H01G11/08C25B1/00C25B1/04C25B11/04
CPCC25B1/04C25B1/55C25B11/091H01G11/08Y02E60/13Y02E60/36Y02P20/133
Inventor 陆军张小让高林宁
Owner BEIJING UNIV OF CHEM TECH
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