MOS2 (molybdenum disulfide) and TiO2 (titanium dioxide) nanocomposites and production method thereof

A technology of composite materials and nanorods, which is applied in the field of MOS2/TiO2 nanocomposite materials and their preparation, can solve the problems of large-scale production limitations and achieve the effect of improving capacitance performance

Active Publication Date: 2013-12-04
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the problem that the large-scale production of supercapacitor anode materials in the prior art is limited to carbon-based materials, a large-scale mass production of MoS that can be used as supercapacitor anode materials and has excellent capacitive properties is provided. 2 Electrode Material Method

Method used

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  • MOS2 (molybdenum disulfide) and TiO2 (titanium dioxide) nanocomposites and production method thereof
  • MOS2 (molybdenum disulfide) and TiO2 (titanium dioxide) nanocomposites and production method thereof
  • MOS2 (molybdenum disulfide) and TiO2 (titanium dioxide) nanocomposites and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] TiO 2 The synthesis of nanorods on commercial carbon cloths was achieved by a seed-layer-assisted hydrothermal method. Before the hydrothermal reaction of the seed layer, commercial carbon cloth (3 cm x 5 cm) was ultrasonically cleaned in deionized water, ethanol, acetone, and deionized water for 10 minutes, and then dried with compressed air for later use. Dip a cleaned commercial carbon cloth into a solution containing 20 mL of TiCl 4 (0.2 mol / L) aqueous solution in a vial, let it stand for 5 min. Then take it out and spin dry, put it in the oven that has been preheated to 300 o C on a hot plate for 10 min. After cooling, repeat the above operation once, and get a large amount of TiO 2 Commercial carbon cloth with nanoparticles. The commercial carbon cloth obtained above was placed in a volume of 40 mL filled with TiO 2 In the autoclave of nanorod growth solution (reaction solution is generally 80% of reactor volume), hydrothermal reaction is at 160 o C for 5 ...

Embodiment 2

[0039] MoS 2 The synthesis directly on commercial carbon cloth was achieved by direct hydrothermal method. Commercial carbon cloth was placed in a volume of 40 mL filled with MoS 2 In the high-pressure reactor of the growth solution (the reaction solution is generally 80% of the reactor volume), the hydrothermal reaction is carried out at 190 o C for 12 h. MoS 2 The hydrothermal reaction solution consisted of 60 mg sodium molybdate, 100 mg thioacetamide, and 40 mL deionized water. Cool to room temperature after the reaction finishes, and the gained sample is washed three times repeatedly with deionized water, 80 o C to dry

[0040] Cyclic voltammetry and galvanostatic charge-discharge tests in electrochemical methods were used to study MoS grown directly on carbon cloth 2 Supercapacitor performance, the maximum specific capacitance value obtained by calculation is 132 F / g, which is far less than that of MoS in Example 1 2 / TiO 2 nanocomposites. This is mainly due to t...

Embodiment 3

[0042] The invention is based on the scheme of Example 1, by adjusting different reaction conditions, affecting MoS 2 / TiO 2 growth, and its relationship is shown in Table 1 and Table 2.

[0043] Table 1. TiO 2 Growth regulation of nanorods

[0044]

[0045] Table 2. MoS 2 growth regulation

[0046]

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Abstract

The invention relates to the energy storage field and discloses MOS2 (molybdenum disulfide) and TiO2 (titanium dioxide) nanocomposites and a production method thereof. The MOS2 and TiO2 nanocomposites are composite materials of nano molybdenum disulfide and titanium dioxide, namely the MOS2 and TiO2. The MOS2 and TiO2 nanocomposites are obtained through the two-step hydrothermal method which comprises, to be specific, growing titanium dioxide nanorods on a seed layer through the auxiliary hydrothermal method and coating a layer of molybdenum disulfide on the outer layer of the titanium dioxide nanorods through the direct hydrothermal method. According to the obtained MOS2 and TiO2 nanocomposites through production, the energy can be effectively stored and a good method is provided for the existing energy storage problem due to the high specific surface area of the titanium dioxide one-dimensional nanorods and the excellent super capacitance performance of the molybdenum disulfide. According to the production method, the energy consumption is low, the condition is simple, the large-scale production is easy and the like.

Description

technical field [0001] The present invention relates to the field of energy storage, more specifically, to a MOS 2 / TiO 2 Nanocomposites and methods for their preparation. Background technique [0002] As an important material basis for the development of human society and economy, energy issues have always been an important issue that plagues society. With the explosive growth of population and the rapid development of society, the various demands of human beings for energy are also increasing day by day. However, with the non-renewable and over-exploitation of traditional fossil energy, the existing energy structure mainly based on traditional fossil energy can no longer meet the various needs of society for energy in the long term. In addition, with the development of fossil energy, the greenhouse effect is becoming more and more serious, and the ecological environment is deteriorating. Pure and renewable green energy has become the focus of attention. A series of new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30
CPCY02E60/13
Inventor 卢锡洪于明浩童叶翔
Owner SUN YAT SEN UNIV
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