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Method for preparing carbon-material-carrying tin dioxide nanosheet composite material

A technology of tin dioxide and composite materials, applied in tin oxide, carbon compounds, nanotechnology for materials and surface science, etc., can solve the problems of unfavorable environmental protection, high cost, easy agglomeration of tin dioxide particles, etc. Simple, low production cost and excellent electrochemical performance

Inactive Publication Date: 2012-10-10
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantages of this method are: (1) ethanol is a solvent, and the cost is higher; (2) using sodium hydroxide is not conducive to environmental protection; (3) tin dioxide particles in the composite material are easy to agglomerate

Method used

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  • Method for preparing carbon-material-carrying tin dioxide nanosheet composite material

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Effect test

Embodiment 1

[0021] A kind of preparation method of carbon material loaded tin dioxide nano sheet composite material, its specific steps are as follows:

[0022] (1) mixing and stirring

[0023] With carbon material (graphene) and tin dichloride dihydrate and sodium citrate dihydrate as raw materials, water as solvent, according to the quality (g) of graphene: the quality (g) of tin dichloride dihydrate: dihydrate The mass (g) of sodium citrate: the ratio of the volume (ml) of deionized water is the ratio of 1: 9: 29.4: 200, in container, add graphene, tin dichloride dihydrate, sodium citrate dihydrate and deionized water, mixed and stirred for 20 minutes to obtain a mixed solution of graphene and tin dioxide precursor.

[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...

Embodiment 2

[0029] A kind of preparation method of carbon material loaded tin dioxide nano sheet composite material, with embodiment 1, wherein:

[0030] In the (1) step, carbon material (carbon nanotube) and tin dichloride dihydrate and sodium citrate dihydrate are raw materials, and water is solvent, by the quality (g) of carbon nanotube: tin dichloride dihydrate The mass (g): the mass (g) of sodium citrate dihydrate: the ratio of the volume (ml) of deionized water is the ratio of 1: 1: 0.1: 50, and the mixing and stirring time in the container is 2 minutes.

[0031] In the 2nd step, hydrothermal reaction temperature is 140 ℃, and hydrothermal reaction time is 36 hours, and the mass (g) of precipitation: the volume ratio (ml) of deionized water is 1: 40, repeats like this 12 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 carbon material loaded tin dioxide nano sheet composite material, with embodiment 1, wherein:

[0035] In (1) step, carbon material (graphite) and tin dichloride dihydrate and sodium citrate dihydrate are raw materials, and water is solvent, by the quality (g) of graphite: the quality of tin dichloride dihydrate (g ): the mass (g) of sodium citrate dihydrate: the ratio of the volume (ml) of deionized water is the ratio of 1: 18: 50: 500, and the mixing and stirring 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, the mass (g) of precipitation: the volume ratio (ml) of deionized water is 1: 200, repeats like this 3 times.

[0037] In step (3), the drying temperature is 160° C., and the drying time is 4 hours.

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Abstract

The invention relates to a method for preparing a carbon-material-carrying tin dioxide nanosheet composite material, belonging to the technical field of functional composite materials. According to the method, a carbon material, tin dichloride dihydrate and sodium citrate dihydrate are taken as raw materials and are subjected to mixing, stirring, hydrothermal synthesis, solid-liquid separation, cleaning and drying, and then, the morphology-controlled carbon-material-carrying tin dioxide nanosheet composite material is prepared. The method provided by the invention is simple and is convenient in operation; and water is taken as a solvent, so that the production cost is lower, the environment is not polluted, and the popularization and the application are facilitated. The carbon-material-carrying tin dioxide nanosheet composite material prepared by adopting the method provided by the invention can be widely applied to new-energy devices such as lithium ion batteries, solar batteries and supercapacitors, and can also be applicable 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 a carbon material-loaded tin dioxide nanosheet composite material. 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. Carbon materials are known for their low price, excellent electrical conductivity, and physical and chemical stability. Using carbon materials as a carrier to grow tin dioxide can not only restrain the agglomeration phenomenon, but also the combination of in-situ growth can more effectively play the role of the composite of the two. effect. The composite of carbon material and tin dioxide can significantly improve the conductivity, electrochemical capacity and other properties of the material, and can be widely used in lithium-ion batte...

Claims

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Application Information

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IPC IPC(8): C01G19/02C01B31/04B82Y30/00B82Y40/00C01B32/168C01B32/194C01B32/21
Inventor 黄佳木柳红东李新禄刘佳刘圆圆香承杰
Owner CHONGQING UNIV
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