Preparation method of flower-shaped molybdenum disulfide microspheres

A technology of molybdenum disulfide and microspheres, which is applied in the directions of molybdenum sulfide, electrical components, battery electrodes, etc., can solve the problems of complicated preparation process, long reaction time of preparation process, etc., and achieves low cost, high product yield, good shape uniform effect

Inactive Publication Date: 2015-03-04
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, many flower-shaped molybdenum disulfides are prepared by hydrothermal method, but the preparation process has disadvantages such as lo

Method used

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  • Preparation method of flower-shaped molybdenum disulfide microspheres
  • Preparation method of flower-shaped molybdenum disulfide microspheres
  • Preparation method of flower-shaped molybdenum disulfide microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Dissolve 1.24g of ammonium molybdate tetrahydrate into 36mL of deionized water to prepare a 0.03mol / L solution, then add 2.28g of thiourea, stir for 20min with a magnetic stirrer, and transfer the stirred solution to a volume of 50mL of water In a thermal reaction kettle; conduct a hydrothermal reaction at 220°C for 6 hours, then cool naturally, centrifuge, wash with deionized water and ethanol, and then dry to obtain molybdenum disulfide microspheres.

Embodiment 2

[0019] Dissolve 2.22g of ammonium molybdate tetrahydrate into 36mL of deionized water to prepare a 0.05mol / L solution, then add 2.28g of thiourea, stir with a magnetic stirrer for 30min, and transfer the stirred solution to a volume of 50mL of water In a thermal reaction kettle; conduct a hydrothermal reaction at 240°C for 8 hours, then cool naturally, centrifuge, wash with deionized water and ethanol, and then dry to obtain molybdenum disulfide microspheres.

Embodiment 3

[0021] Dissolve 0.89g of ammonium molybdate tetrahydrate into 36mL of deionized water to prepare a 0.02mol / L solution, then add 1.09g of thiourea, stir for 20min with a magnetic stirrer, and transfer the stirred solution to a volume of 50mL of water In a thermal reaction kettle; conduct a hydrothermal reaction at 220°C for 4 hours, then cool naturally, centrifuge, wash with deionized water and ethanol, and then dry to obtain molybdenum disulfide microspheres.

[0022] figure 1 It is the XRD pattern of the product prepared in embodiment 1, and the product is pure MoS 2 hexagonal crystal; figure 2 It is the EDS spectrum of the product prepared in Example 1. There are only S and Mo elements in the figure, and the atomic ratio of the two elements is 1.98:1, indicating that the prepared product is pure MoS 2 ; image 3 Be the SEM photograph of the product prepared in embodiment 1, from the SEM photograph of low magnification image 3 In a, it can be clearly seen that the sampl...

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Abstract

The invention discloses a preparation method of flower-shaped molybdenum disulfide microspheres. The preparation method comprises the steps of dissolving ammonium molybdate tetrahydrate in deionized water to prepare a solution of 0.02-0.05 mol/L; adding thiourea to the solution, and stirring the mixture for 20-30 min by using a magnetic stirrer so that the solution is mixed uniformly, wherein the mol ratio of ammonium molybdate tetrahydrate to thiourea is (1 : 20) to (1 : 30); transferring the solution to a hydrothermal reaction kettle, performing hydrothermal reaction for 4-8 hours at 220-240 DEG, naturally cooling, centrifuging, washing by deionized water and ethyl alcohol, and drying again to obtain molybdenum disulfide microspheres. The preparation method of the flower-shaped molybdenum disulfide microspheres has the advantages that the cost is low, the process is simple and is easy to control, the appearances of the prepared microspheres are even, and the product output is high; the preparation method is applied to large-scale industrial production.

Description

Technical field [0001] The invention involves the field of inorganic materials and specially involves a preparation method of a flower -shaped mesh -molybdenum microsphere. Background technique [0002] In recent years, a large number of mobile electronic products such as mobile phones, digital cameras, cameras, and laptops have been widely popularized in people's lives. With the development of mobile electronic products, the requirements for its power supply have become higher and higher.Since the commercialized lithium -ion battery was launched by Sony Sony in the 1990s, lithium -ion batteries have become the first choice for many portable electrical products.In addition, with the increasingly exhausted oil resources on the planet, electric vehicles have received more and more attention in the world, and a key factor restricting electric vehicle development is its power supply.With the continuous deepening of the research on lithium ion batteries, lithium -ion batteries with st...

Claims

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Application Information

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IPC IPC(8): H01M4/58C01G39/06
CPCC01G39/06H01M4/5815Y02E60/10
Inventor 张向华王出雷卫宁叶霞唐华李长生
Owner JIANGSU UNIV OF TECH
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