Molybdenum sulfide/graphene/carbon nanoball composite material and preparing method thereof

A carbon nanosphere, composite material technology, applied in the direction of molybdenum sulfide, nanotechnology, nanotechnology, etc., can solve the problems of poor electrical conductivity, the excellent performance of pure molybdenum sulfide cannot be fully utilized, etc., achieve high specific surface area, and ingenious experimental design. , the effect of simple preparation process

Inactive Publication Date: 2016-02-03
FUDAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, pure molybdenum sulfide is easy to agglomerate, and it preferentially grows the inert inner layer structure instead of the active sheet edge, and a large number of agglomerates further inhibits the exposure of the active edge, coupled with its poor conductivity, pure sulfide The excellent properties of molybdenum are often not fully utilized

Method used

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  • Molybdenum sulfide/graphene/carbon nanoball composite material and preparing method thereof
  • Molybdenum sulfide/graphene/carbon nanoball composite material and preparing method thereof
  • Molybdenum sulfide/graphene/carbon nanoball composite material and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1, This embodiment includes the following steps:

[0029] (1) Add 500mg of glucose powder into 50mL of water, stir to obtain a uniform salt solution, transfer it to a hydrothermal kettle, and react at 180°C for 12h. After cooling down naturally, take out the precipitate and wash it repeatedly with deionized water for several times and drying to prepare carbon nanospheres;

[0030] (2) Put the obtained 10mg of carbon nanospheres into 20mL of 1mgmL -1 After the graphene oxide solution, ultrasonic for 3 hours to prepare a uniform graphene oxide / carbon nanosphere dispersion;

[0031] (3) Dissolve 100mg of ammonium molybdate and 75mg of thiourea in the graphene oxide / carbon nanosphere dispersion, transfer them to a hydrothermal kettle, and react at 200°C for 18 hours. After cooling down naturally, take out the precipitate and use it After repeated washing with ion water and drying, the molybdenum sulfide / graphene / carbon nanosphere composite material was prepared,...

Embodiment 2

[0033] Example 2, Change the quality of ammonium molybdate in Example 1 to 50 mg, the quality of thiourea to 37.5 mg, and the rest are the same as in Example 1, and the finally obtained composite material is denoted as MoS 2 / GNS / CS-2. Implementation results: molybdenum sulfide nanosheets grow uniformly on graphene / carbon nanospheres; with MoS 2 / GNS / CS-1 compared to MoS 2 Molybdenum sulfide nanosheets in / GNS / CS-2 have smaller sheets and less content.

Embodiment 3

[0034] Example 3, Change the quality of ammonium molybdate in Example 1 to 200mg, and the quality of thiourea to 150mg, and the rest are the same as in Example 1. The composite material finally obtained is denoted as MoS 2 / CNF / G-3. Implementation results: molybdenum sulfide nanosheets grow uniformly on graphene / carbon nanospheres; with MoS 2 / GNS / CS-1 compared to MoS 2 Molybdenum sulfide nanosheets in / GNS / CS-3 have larger sheets and more content.

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Abstract

The invention belongs to the technical field of transition metal sulfide / carbon materials, and particularly discloses a molybdenum sulfide / graphene / carbon nanoball composite material and a preparing method thereof. The preparing method includes the steps that carbon nanoballs are prepared with a hydrothermal method, then the carbon nanoballs and graphene oxide are mixed, molybdenum sulfide nanosheets grow on the graphene oxide / carbon nanoballs with a one-step hydrothermal method, and the molybdenum sulfide / graphene / carbon nanoball composite material is prepared with a thermal reduction method. The prepared molybdenum sulfide / graphene / carbon nanoball composite material has the advantages of being of a three-dimensional porous structure, being good in electrical conductivity and stable in chemical performance and the like, and can serve as an ideal high-performance electro-catalysis material and an electrode material of new energy devices such as a lithium-ion battery and a solar cell.

Description

technical field [0001] The invention belongs to the technical field of transition metal sulfide-carbon materials, and in particular relates to a molybdenum sulfide / graphene / carbon nanosphere composite material and a preparation method thereof. technical background [0002] Graphene has excellent physical and chemical properties, such as high electrical conductivity, excellent mechanical properties, high specific surface area, light weight and low density, and good chemical stability. These special properties make it widely used in catalyst supports, polymer nanocomposites, flexible substrate materials for energy conversion and storage devices, etc. It is considered to be one of the top ten new materials with the greatest potential in the future. However, graphene sheets are easy to stack, so that the excellent properties of graphene cannot be fully utilized. This patent prepares carbon nanospheres by hydrothermal method, and combines graphene and carbon nanospheres to prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06H01G11/24H01G11/30H01M4/36H01M4/58H01M4/62B82Y30/00
CPCY02E60/10
Inventor 刘天西张龙生樊玮缪月娥左立增顾华昊
Owner FUDAN UNIV
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