Preparation method of cobalt sulfide Co<1-x>S hexagonal sheet aggregate material

A co1-xs, sulfide technology, applied in cobalt compounds, chemical instruments and methods, cobalt sulfide, etc., can solve the problems of complex preparation process and complex preparation process, and achieve simple and easily controllable preparation process, large surface area, no process. The effect of pollution

Inactive Publication Date: 2019-12-31
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation methods of Shixiong Sun et al. and Guo Wenhui require high-temperature carbonization, the preparation process is complicated, and Guo Wenhui’s preparation method does not synthesize products with specific morphology; while the preparation method of Jiaqing Zhu et al. is a hydrothermal reaction, but it needs to be regulated The product can only be synthesized at two temperatures, and the preparation process is more complicated

Method used

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  • Preparation method of cobalt sulfide Co&lt;1-x&gt;S hexagonal sheet aggregate material
  • Preparation method of cobalt sulfide Co&lt;1-x&gt;S hexagonal sheet aggregate material
  • Preparation method of cobalt sulfide Co&lt;1-x&gt;S hexagonal sheet aggregate material

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Effect test

Embodiment 1

[0038] A cobalt sulfide Co 1-x The preparation method of S hexagonal sheet aggregate material comprises steps as follows:

[0039]Add 1.1897g of cobalt chloride to 60mL of distilled water, stir in a water bath at 35°C, stir evenly, add 1.903g of thiourea and 0.5g of polyvinylpyrrolidone while stirring, and keep stirring at 35°C for 30 minutes to make the cobalt chloride , thiourea, and polyvinylpyrrolidone were completely dissolved to obtain a mixed solution; the pH of the mixed solution was adjusted to 0.7 with 1mol / L hydrochloric acid solution, and the adjusted pH solution was transferred to a reaction kettle, sealed, and placed in an oven at 160°C After the reaction was completed, the reaction kettle was naturally cooled to room temperature, and the supernatant in the reaction kettle was removed. The product was washed with water and ethanol for 3 times respectively, and then dried in a 60°C oven for 8 hours to obtain a black The powder product is cobalt sulfide Co 1-x S ...

Embodiment 2

[0045] A cobalt sulfide Co 1-x The preparation method of S hexagonal sheet aggregate material comprises steps as follows:

[0046] Add 0.7472g of cobalt acetate into 65mL of mixed solvent (the volume ratio of distilled water and ethylenediamine is 12:1), stir in a water bath at 35°C, stir evenly, add 0.4446g of ammonium thiosulfate, 0.01g of ten Hexaalkyltrimethylammonium bromide was continuously stirred for 30 minutes at 35°C, so that cobalt acetate, ammonium thiosulfate and cetyltrimethylammonium bromide were completely dissolved to obtain a mixed solution; the mixed solution was transferred to In the reaction kettle, seal it, put it in an oven, and react at 200 ° C for 26 hours. After the reaction, the reaction kettle is naturally cooled to room temperature, and the supernatant in the reaction kettle is removed. The product is washed with water and ethanol for 3 times respectively. Put it in an oven at 80°C and dry it for 10 hours, and the obtained black powder product is ...

Embodiment 3

[0048] A cobalt sulfide Co 1-x The preparation method of S hexagonal sheet aggregate material comprises steps as follows:

[0049] Add 0.8328g of cobalt chloride to 65mL of mixed solvent (the volume ratio of distilled water and ethylenediamine is 13:1), stir in a water bath at 35°C, stir evenly, add 0.5533g of sodium thiosulfate while stirring, 0.01g Polypyrrole, keep stirring at 35°C for 30 minutes, so that cobalt chloride, sodium thiosulfate and polypyrrole are completely dissolved to obtain a mixed solution; transfer the mixed solution to a reaction kettle, seal it, put it in an oven, and heat it at 200°C After the reaction was completed, the reaction kettle was naturally cooled to room temperature, and the supernatant in the reaction kettle was removed. The product was washed with water and ethanol for 3 times respectively, and then dried in a 60°C oven for 10 hours to obtain a black The powder product is cobalt sulfide Co 1-x S hexagonal sheet aggregate material.

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Abstract

The invention provides a preparation method of a cobalt sulfide Co<1-x>S hexagonal sheet aggregate material. The preparation method comprises the following steps: adding a soluble cobalt source, a sulfur source and a surfactant into a solvent, carrying out uniform stirring to obtain a mixed solution, then reacting the mixed solution at 80-200 DEG C for 6-48 hours, and carrying out cooling, washingand drying to obtain black powder, namely the cobalt sulfide Co<1-x>S hexagonal sheet aggregate material. According to the invention, the raw materials are cheap and easily available, and the material can be synthesized by adopting a one-step solvothermal method; operation is convenient and easy; the reaction is simple and is easy to control; the process is free of pollution and is environmentally friendly; and the obtained cobalt sulfide Co<1-x>S hexagonal sheet aggregate material is pure in phase, unique in appearance, uniform in size and high in surface area. When being used as a lithium ion battery negative electrode material, the cobalt sulfide Co<1-x>S hexagonal sheet aggregate material has excellent electrochemical performance, and is widely applied energy storage and conversion devices and catalysts.

Description

technical field [0001] The present invention relates to a kind of cobalt sulfide Co 1-x The invention discloses a preparation method of an S hexagonal sheet aggregate material, which belongs to the field of nanometer material processing and production. Background technique [0002] With the development of social economy, people's demand for energy is increasing day by day. At present, humans mainly use fossil fuels (coal, oil, natural gas, etc.) as energy sources. However, its limited reserves and the environmental pollution it brings seriously threaten the survival of human beings. This promotes the development and application of new energy technologies. Sustainable energy generation technologies such as wind energy, hydrogen energy, geothermal energy, and solar energy have developed rapidly. In order to store and convert renewable energy, it is urgent to develop advanced energy conversion and storage. The development of energy conversion and storage technology largely d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/00H01M4/58H01M10/0525
CPCC01G51/30C01P2004/22C01P2004/50C01P2004/62H01M4/5815H01M10/0525H01M2004/027Y02E60/10
Inventor 刘少杰提雅嵋沈强孙安邦陆玮洁刘渊刘华飞
Owner SHANDONG UNIV
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