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Preparation method of lamellar molybdenum disulfide/carbon composite

A technology of carbon composite materials and molybdenum disulfide, which is applied in the field of preparation of layered molybdenum disulfide/carbon composite materials, can solve the problems of increased material cost, incapable mass production by thermal reduction method, and hydrogen consumption, and achieves low cost and easy The effect of expanded production and high specific capacity

Active Publication Date: 2017-10-17
ZHEJIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] CN105047914A discloses a method of using ammonium tetrathiomolybdate as a molybdenum source and a sulfur source at the same time, and silica microspheres as a sacrificial template, and utilizing a thermal reduction method to prepare a lithium-ion battery negative electrode material molybdenum disulfide / carbon composite material, However, this method needs to consume energy such as hydrogen, and the raw material of ammonium tetrathiomolybdate is relatively expensive, which increases the cost of the material itself, and the thermal reduction method cannot be mass-produced

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  • Preparation method of lamellar molybdenum disulfide/carbon composite
  • Preparation method of lamellar molybdenum disulfide/carbon composite
  • Preparation method of lamellar molybdenum disulfide/carbon composite

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Embodiment 1

[0038] Embodiment 1-1, the quality of step 3) ammonium molybdate in embodiment 1 is changed from 3g to 5g (0.00405mol), and all the other are equal to embodiment 1. The obtained layered molybdenum disulfide / carbon composite microscopic scan image is shown in figure 2 As shown, it can be observed that lamellar molybdenum disulfide particles are piled up in all directions, and its specific surface area is 51.37m 2 g -1 .

[0039] Embodiment 1-2, step 3 in embodiment 1) the quality of ammonium molybdate becomes 7g (0.00566mol) from 3g, all the other are the same as embodiment 1. Obtained layered molybdenum disulfide / carbon composite material microscopic scanning picture is as image 3 shows that its specific surface area is 68.48m 2 g -1 .

[0040] The XRD of the layered molybdenum disulfide / carbon composite that embodiment 1, embodiment 1-1, embodiment 1-2 obtains is as follows Figure 4 Shown, wherein S1, S2 and S3 respectively represent embodiment 1, embodiment 1-1, the...

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Abstract

The invention discloses a preparation method of lamellar molybdenum disulfide / carbon composite; the preparation method comprises the steps of adding tetramethyl orthosilicate to hydrochloric acid solution, deionized water and absolute ethyl alcohol to obtain silica sol; dissolving ammonium molybdate in deionized water, adding glucose, and adding the silica sol in the obtained solution, and standing; drying the obtained wet gel, placing the dried gel in an inert gas protected tubular furnace, and allowing the gel to react with sulfur powder at 600-1000 DEG C for 3-6 h to obtain black powder; dissolving the black powder in NaOH solution, standing at 80-100 DEG C for 18-24 h, and centrifuging to obtain the lamellar molybdenum disulfide / carbon composite.

Description

technical field [0001] The invention relates to a preparation method of a layered molybdenum disulfide / carbon composite material, in particular to a preparation method of a layered molybdenum disulfide / carbon composite material used for lithium battery negative electrode materials. Background technique [0002] The 21st century is an era of rapid development of new energy and new materials. The exploration of new energy can solve the increasingly serious problem of natural energy depletion in human society. The research and application of new materials with excellent performance may break through some technical bottlenecks in current industrial production. , greatly improving the productivity level of human society. Therefore, various countries are bound to compete fiercely in new energy and new materials. The emergence of lithium-ion batteries has greatly changed human life. Lithium-ion batteries, as a type of secondary battery, are widely used in electronic products, suc...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M10/0525
CPCH01M4/362H01M4/581H01M4/583H01M10/0525Y02E60/10
Inventor 郭兴忠尹朋岸王子晨杨辉
Owner ZHEJIANG UNIV
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