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Molybdenum disulfide-graphene aerogel electrode material preparation method

A graphene airgel and electrode material technology, applied in graphene, battery electrodes, secondary batteries, etc., can solve the problems of difficult process control, high production cost, complicated preparation process, etc., and achieve good electrical conductivity and thermal conductivity The effect of high efficiency, simple and environmentally friendly preparation method, and easy industrial production

Inactive Publication Date: 2017-11-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation methods of molybdenum disulfide / graphene airgel electrode materials reported so far are mainly self-assembly and phase transfer methods, and there are few hydrothermal preparation methods.
The preparation process of self-assembly and phase transfer method is complicated, the process is not easy to control, and the production cost is high, and it also pollutes the environment to a certain extent.

Method used

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  • Molybdenum disulfide-graphene aerogel electrode material preparation method
  • Molybdenum disulfide-graphene aerogel electrode material preparation method
  • Molybdenum disulfide-graphene aerogel electrode material preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Add 2mmol of molybdenum trioxide and 10mg of graphene oxide into 300mL of distilled water, disperse for 12h and make it uniform under the conditions of ultrasonic power of 300W and ultrasonic temperature of 25°C to obtain an intermediate solution; then add 1mmol of thiourea to the intermediate solution Stir for 30 minutes at a rotation speed of 700r / min until evenly mixed to obtain a mixed solution; transfer the mixed solution to a polytetrafluoroethylene hydrothermal lining and put it into an oven with a filling ratio of 60%, and conduct a hydrothermal reaction at a temperature of 180°C for 24 hours After the reaction was completed, it was naturally cooled to room temperature, centrifuged and washed three times with deionized water and absolute ethanol, and the precipitate was separated. The separated precipitate was taken out and freeze-dried under vacuum conditions. The freezing temperature was -40 ° C, and the freezing time was After 24 hours, the molybdenum disulfid...

Embodiment 2

[0035] Add 3mmol of molybdenum trioxide and 20mg of graphene oxide into 300mL of distilled water, ultrasonically disperse for 12h under the conditions of ultrasonic power of 300W and ultrasonic temperature of 25°C, and make it uniform to obtain an intermediate liquid; then add 2mmol thiourea was stirred at a speed of 700r / min for 30min until uniformly mixed to obtain a mixed solution; the mixed solution was transferred to a polytetrafluoroethylene hydrothermal lining and placed in an oven with a filling ratio of 60%, and the water was heated at a temperature of 180°C Heat the reaction for 24 hours, cool down to room temperature naturally after the reaction, centrifuge and wash 3 times with deionized water and absolute ethanol, separate the precipitate, take out the separated precipitate and freeze-dry under vacuum conditions, the freezing temperature is -40 ° C, The freezing time is 24 hours, and the molybdenum disulfide / graphene airgel electrode material is obtained.

Embodiment 3

[0037] Add 6mmol of molybdenum trioxide and 30mg of graphene oxide into 300mL of distilled water, ultrasonically disperse for 12 hours under the conditions of ultrasonic power of 300W and ultrasonic temperature of 25°C and make it uniform to obtain an intermediate solution; then add 2mmol to the intermediate solution Thiourea, stirred at 700r / min for 30 minutes until uniformly mixed to obtain a mixed solution; transferred the mixed solution to a polytetrafluoroethylene hydrothermal lining and put it into an oven with a filling ratio of 60%. Heat the reaction for 18 hours, cool to room temperature naturally after the reaction, centrifuge and wash 3 times with deionized water and absolute ethanol, separate the precipitate, take out the separated precipitate and freeze-dry under vacuum conditions, the freezing temperature is -40 ° C, The freezing time is 24 hours, and the molybdenum disulfide / graphene airgel electrode material is obtained.

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Abstract

The invention discloses a molybdenum disulfide-graphene aerogel electrode material preparation method. The preparation method is specifically implemented according to the following steps: step one, adding molybdenum trioxide and graphene oxide into a certain amount of distilled water, and ultrasonically dispersing by using an ultrasonic cleaner and uniformly mixing the molybdenum trioxide and graphene oxide and the distilled water to obtain an intermediate solution; step two, adding the sulfur source in the intermediate solution obtained through the step one, stirring to uniform mixing to obtain the mixed solution; step three, transferring the mixed solution obtained in the step two to the polytetrafluoroethylene hydrothermal lining, and placing the lining in an oven, performing hydrothermal reaction for a certain time at a certain temperature, and naturally cooling the reactant to the room temperature after the reaction is finished; and step four, washing the reactant after cooling, separating and precipitating, taking out the separated precipitate, and freezing and drying at a vacuum condition to obtain the molybdenum disulfide-graphene aerogel electrode material. The preparation process is simple and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of nano functional materials, and relates to a preparation method of a molybdenum disulfide-graphene airgel electrode material. Background technique [0002] The molybdenum disulfide / graphene airgel electrode material itself has good elastic characteristics and is very suitable for use as an electrode material for flexible batteries. Molybdenum disulfide / graphene airgel composite materials can be used as electrode materials for lithium-ion batteries Construct a flexible lithium-ion battery, making full use of the two-dimensional honeycomb structure of molybdenum disulfide and graphene in a sandwich layer structure, high electrical and thermal conductivity, functionalized surface, and easy processing into flexible films, large The specific surface area can load more active materials and other characteristics to further improve its electrochemical performance on the basis of achieving fl...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62H01M10/0525C01B32/182
CPCH01M4/362H01M4/5815H01M4/583H01M4/625H01M10/0525Y02E60/10
Inventor 刘辉董婉萌庞凌燕梁宇程一乔王子怡陈南涛赵向楠
Owner SHAANXI UNIV OF SCI & TECH
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