Preparation method of flower-like tin dioxide and graphene composite material

A tin dioxide and composite material technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of easy agglomeration of tin dioxide particles, unfavorable industrial production, low output of composite materials, etc. The effect of short mixing time and easy operation

Inactive Publication Date: 2012-01-18
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main shortcoming of this method is: (1) ethanol is solvent, and cost is higher; (2) uses cetyltrimethylammonium bromide as surfactant, is unfavorable for environmental protection and increases cost
The main shortcoming of this method is: (1) ethylene glycol is organic solvent, and cost is higher, and is unfavorable for environmental protection; (2) ultrasonic vibration 6 hours, dispersion time is too long; Tin dioxide particles are easy to agglomerate, resulting in poor performance, which is not conducive to industrial production

Method used

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  • Preparation method of flower-like tin dioxide and graphene composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation method of flower-shaped tin dioxide and graphene composite material, its concrete steps are as follows:

[0022] (1) mixing and stirring

[0023] With tin tetrachloride pentahydrate and sodium hydroxide and graphene oxide as raw material, water is solvent, by the quality (g) of tin tetrachloride pentahydrate: the quality (g) of sodium hydroxide: the quality of graphene oxide ( g): The ratio of the volume (ml) of deionized water is 1: 1.4: 0.1: 40, in the container, add tin tetrachloride pentahydrate, sodium hydroxide, graphene oxide and deionized water, mix and stir In 20 minutes, a mixed solution of graphene oxide and tin dioxide precursor was obtained.

[0024] (2) Hydrothermal reaction

[0025] After the step (1) was completed, the mixed solution obtained in the step (1) was moved to a polytetrafluoroethylene-lined hydrothermal reaction kettle, and the hydrothermal reaction was carried out for 16 hours at a temperature of 200° C., and then Th...

Embodiment 2

[0029] A kind of preparation method of flower-shaped tin dioxide and graphene composite material, with embodiment 1, wherein:

[0030] In the (1) step, the quality (g) of tin tetrachloride pentahydrate: the quality (g) of sodium hydroxide: the quality (g) of graphene oxide: the ratio of the volume (ml) of deionized water is 1: 1.2:0.001:30, the mixing and stirring time in the container is 2 minutes.

[0031] In the 2nd step, the hydrothermal reaction temperature is 160 ℃, and the hydrothermal reaction time is 36 hours, the mass (g) of precipitation: the volume ratio (ml) of deionized water is 1: 40, repeats like this 10 times.

[0032] In step (3), the drying temperature is 40° C., and the drying time is 96 hours.

Embodiment 3

[0034] A kind of preparation method of flower-shaped tin dioxide and graphene composite material, with embodiment 1, wherein:

[0035] In the (1) step, the quality (g) of tin tetrachloride pentahydrate: the quality (g) of sodium hydroxide: the quality (g) of graphene oxide: the ratio of the volume (ml) of deionized water is 1: 1.6:0.4:45, the mixing time in the container is 60 minutes.

[0036] In the 2nd step, the hydrothermal reaction temperature is 250 ℃, and the hydrothermal reaction time is 2 hours, and the mass (g) of precipitation: the volume ratio (ml) of deionized water is 1: 200, so repeat 2 times.

[0037] In step (3), the drying temperature is 150° C., and the drying time is 6 hours.

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Abstract

The invention discloses a preparation method of a flower-like tin dioxide and graphene composite material, belonging to the technical field of functional composite materials. According to the preparation method disclosed by the invention, the flower-like tin dioxide and graphene composite material with controllable morphology is prepared from graphene oxide, tin chloride pentahydrate and sodium hydroxide as raw materials by adopting the steps of mixed stirring, hydro-thermal synthesis, solid-liquid separation, cleaning and drying. The method disclosed by the invention has the advantages of simpleness, convenience for operation, lower production cost, no influence on the environment and convenience for popularization and application; and in the method, water is used as solvent and no surfactant is used. The flower-like tin dioxide and graphene composite material prepared by adopting the method can be widely applied to new energy source devices such as a lithium ion battery, a solar cell, a super capacitor and the like, or can be applied to the fields of catalyst carriers, information materials and the like.

Description

technical field [0001] The invention belongs to the technical field of functional composite materials, and in particular relates to a preparation method of flower-shaped tin dioxide and graphene composite materials. Background technique [0002] Tin dioxide has a regular tetrahedral rutile structure, stable physical and chemical properties, low price, and no pollution. It is a wide-bandgap semiconductor material that is widely valued. Graphene is made from SP 2 A two-dimensional material composed of hybrid carbon atoms has a large specific surface area and excellent electrical, thermal, mechanical, magnetic and other properties. The combination of tin dioxide and graphene can significantly improve the hardness, electrical conductivity, electrochemical capacity and other properties of the material, and can be widely used in the fields of lithium-ion batteries, solar cells, fuel cells, supercapacitors and information materials. [0003] Existing preparation methods of tin di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36
CPCY02E60/12Y02E60/10
Inventor 柳红东黄佳木李新禄刘佳张育新李鸿乂
Owner CHONGQING UNIV
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