Preparation method for molybdenum carbide/ graphene nanoribbonn composite material

A graphene nanoribbon and composite material technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of affecting catalytic properties, and the electrochemical active sites cannot be fully exposed, and achieve good catalytic performance. , Effective and fast preparation method, the effect of enhancing electrochemical performance

Inactive Publication Date: 2016-09-28
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure molybdenum carbide is easy to agglomerate, so that its electrochemical a

Method used

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  • Preparation method for molybdenum carbide/ graphene nanoribbonn composite material
  • Preparation method for molybdenum carbide/ graphene nanoribbonn composite material
  • Preparation method for molybdenum carbide/ graphene nanoribbonn composite material

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Experimental program
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Effect test

Embodiment 1

[0030] Example 1 、 This embodiment includes the following steps:

[0031] (1) Dissolve 100 mg ammonium heptamolybdate and 25 mg glucose in 20 mL water to prepare a uniform salt solution;

[0032] (2) Dilute 20 mL to a concentration of 2 mg mL -1 The graphene oxide nanoribbon aqueous dispersion liquid is dropped into the mixed salt solution obtained in step (1), and stirred for a period of time to form a uniform dispersion liquid;

[0033] (3) The mixture obtained in step (2) was subjected to hydrothermal reaction at 180°C for 12 h;

[0034] (4) The product obtained in step (3) was centrifuged, the precipitate was washed and dried, and then carbonized at a high temperature under the protection of a nitrogen atmosphere. The carbonization temperature was 900 ° C, and the carbonization time was 2 hours. 2 C-GNR-1.

Embodiment 2

[0036] The quality of ammonium heptamolybdate in embodiment 1 becomes 200 mg, the quality of glucose becomes 50mg, all the other are the same as embodiment 1, and the composite material finally obtained is denoted as Mo 2 C-GNR-2.

Embodiment 3

[0038] The quality of ammonium heptamolybdate in Example 1 is changed to 400 mg, the quality of glucose is changed to 100 mg, all the other are the same as in Example 1, and the composite material finally obtained is denoted as Mo 2 C-GNR-3.

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Abstract

The invention belongs to the transition metal carbide-carbon material technology field, and particularly relates to a preparation method for a molybdenum carbide/ graphene nanoribbonn composite material The molybdenum carbide / graphene nanoribbonn composite material is prepared by performing high temperature carbonization on obtained products after performing hydrothermal reaction on ammonium heptamolybdate, glucose and graphene nanoribbonn, wherein the graphene nanoribbonn is obtained through radially shearing and pleaing a multi-wall carbon nanotube, has an opened structure, provides enough active sites for in-situ growth of molybdenum carbide nanoparticles and has good conductivity. The composite material prepared by the method of the invention has controllable morphology, and the molybdenum carbide nanoparticles uniformly grow on the graphene nanoribbonn, which fully utilizes the unique base structure of the graphene nanoribbonn and a high specific surface area. The molybdenum carbide / graphene nanoribbonn composite material prepared by the preparation method is an ideal high performance electrocatalysis material and electrode materials of new energy devices like a lithium ion battery, a super capacitor, etc.

Description

technical field [0001] The invention belongs to the technical field of transition metal carbide-carbon materials, and in particular relates to a molybdenum carbide / graphene nanoribbon composite material and a preparation method thereof. [0002] It can be used as a high-performance electrocatalytic material, as well as an electrode material for new energy devices such as lithium-ion batteries and supercapacitors. Background technique [0003] Graphene nanobelt is a quasi-one-dimensional carbon-based nanomaterial with an open structure. It inherits the excellent physical and chemical properties of carbon nanomaterials, such as high electrical conductivity, excellent mechanical properties and good chemical stability. . In addition, the special edge effect of graphene nanoribbons makes it more flexible and adjustable than graphene and carbon nanotubes. These special properties make it widely used in the fields of catalyst supports, polymer nanocomposites, energy conversion an...

Claims

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Application Information

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IPC IPC(8): H01G11/36H01G11/50H01G11/86
CPCY02E60/13H01G11/36H01G11/50H01G11/86
Inventor 刘天西郜伟施贻琴樊玮左立增鲁恒毅黄云鹏
Owner FUDAN UNIV
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