Graphene/molybdenum disulfide composite electrode material and preparation method thereof

A molybdenum disulfide, composite electrode technology, applied in electrodes, electrolysis process, electrolysis components and other directions, can solve the problems of expensive organic solvent, uneconomical post-processing, difficult to uniform products, etc., to reduce the use of expensive organic solvent DMF, Low production cost and uniform reaction system

Active Publication Date: 2012-12-26
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method all uses DMF, and the raw material graphene oxide of hydrothermal synthesis is hydrophilic and not lipophilic, so it is very difficult to disperse in DMF, and the product is difficult to be uniform. Uneconomical

Method used

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  • Graphene/molybdenum disulfide composite electrode material and preparation method thereof
  • Graphene/molybdenum disulfide composite electrode material and preparation method thereof
  • Graphene/molybdenum disulfide composite electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Experimental method

[0048] Graphite oxide was prepared by the Staudenmair method: the reaction temperature was 5°C, the natural flake graphite was added to the mixed solution of nitric acid and sulfuric acid, stirred and cooled for half an hour, then sodium chlorate was added, reacted at 5°C for 12 hours, and precipitated with water for at least 5 times to remove the acid, and then centrifuged; dried at 65°C to obtain graphite oxide.

[0049] Weigh 1 mg of graphite oxide and add it into 10 ml of deionized water, and ultrasonically strip it for 5 minutes to obtain a graphene oxide solution. Add 10ml of DMF. Weigh 22 mg of ammonium tetrathiomolybdate, add it into the solution, and sonicate for 10 minutes, and the solution turns blood red at this time; then add 1 ml of hydrazine hydrate, and sonicate for 30 minutes. Transfer the above solution to a 100ml reaction kettle, raise the temperature to 200°C, and keep the temperature for 10 hours. A graphene / molybdenum di...

Embodiment 2

[0052] 1. Experimental method

[0053] The preparation method of graphite oxide was the same as that in Example 1, and 10 mg of graphite oxide was weighed and added into 10 ml of deionized water, and ultrasonically peeled for 20 minutes to obtain a graphene oxide solution. Add 10ml of DMF, weigh 22mg of ammonium tetrathiomolybdate, add it to the reaction solution, and ultrasonicate for 10 minutes. At this time, the solution is blood red; then add 1ml of hydrazine hydrate, and ultrasonicate for 40 minutes; transfer the above solution to a 100ml reaction kettle In the process, the temperature was raised to 300°C, and the temperature was kept for 5 hours. A graphene / molybdenum disulfide composite material in which the ratio of graphene to molybdenum disulfide is 1:1 is obtained.

[0054] 2. Experimental results

[0055] Figure 4 For the TEM figure of the graphene / molybdenum disulfide composite material prepared according to Example 2, the TEM test shows that the composite mat...

Embodiment 3

[0057] 1. Experimental method

[0058] The preparation method of graphite oxide was the same as that in Example 1. Weighed 44 mg of graphite oxide and added it to 20 ml of deionized water, and ultrasonically stripped it for 20 minutes to obtain a graphene oxide solution. Add 10ml of DMF, weigh 22mg of ammonium tetrathiomolybdate, add to it, ultrasonic for 10 minutes, the solution is blood red at this time; then add 1ml of hydrazine hydrate, and ultrasonic for 10 minutes;

[0059] Transfer the above solution to a 100ml reaction kettle, raise the temperature to 180°C, and keep the temperature for 10 hours. A graphene / molybdenum disulfide composite material with a material ratio of graphene to molybdenum disulfide of 2:1 is obtained.

[0060] 2. Experimental results

[0061] Such as Figure 6 It is the TEM figure of the graphene / molybdenum disulfide composite material prepared according to embodiment 3; Figure 7 It is the Raman diagram of the material. The test shows that th...

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Abstract

The invention relates to the fields of a novel chemical electric power source and a new energy material, and particularly discloses a graphene/molybdenum disulfide composite electrode material and a preparation method of the composite electrode material. The preparation method comprises the steps of: (1) preparing graphite oxide from graphite as a raw material by an oxidation and intercalation method; (2) dissolving prepared graphite oxide with deionized water, carrying out ultrasonic stripping to obtain a graphene oxide solution, then adding DMF (dimethyl formamide) and molybdate, finally adding a reducing agent, and dispersing uniformly to obtain a mixed solution; and (3) transferring the mixed solution to a reaction kettle, keeping the temperature in the temperature condition of greater than or equal to 180 DEG C for 5-10h, centrifuging and washing the product to remove DMF, and drying to obtain the graphene/molybdenum disulfide composite electrode material product. The preparation method of the graphene/molybdenum disulfide composite electrode material is simple, uniform in reaction system and low in production cost, and is particularly suitable for requirements of industrial large scale production; and the prepared product graphene/molybdenum disulfide composite electrode material has better electrochemical performances.

Description

technical field [0001] The invention relates to the fields of novel chemical power sources and new energy materials, and specifically discloses a graphene / molybdenum disulfide composite electrode material and a preparation method thereof. Background technique [0002] The resources of fossil fuels (oil and coal) used now will be nearly exhausted by the 1950s, and such fuels have serious pollution to the environment. The international scientific and technological community is looking for new energy sources, and hydrogen energy is one of them. The heat of combustion of hydrogen is 28900 kcal / kg, about three times that of gasoline. The reaction product is water, which has no pollution to the environment, and the water generated by combustion can continue to produce hydrogen and be recycled repeatedly. The product water is non-corrosive and harmless to equipment, so people call hydrogen a clean energy. The International Hydrogen Energy Association, formed in 1976, mainly stud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B11/12
Inventor 丁古巧杜福平谢晓明江绵恒
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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