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Graphene-tin antimony oxide composite material and dry-method preparation method thereof

A technology of tin and antimony oxide and composite materials, applied in graphene, chemical instruments and methods, antimony oxide/antimony hydroxide/antimony oxyacid and other directions, can solve problems such as affecting the performance of composite materials, and achieve low cost, good electrical Chemical properties, reducing the effect of subsequent processing steps

Inactive Publication Date: 2017-07-07
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such materials are prepared by reducing graphene oxide, and many toxic reagents are involved in the reduction process, such as hydrazine, sodium borohydride, etc.
At the same time, the existing preparation methods basically adopt wet methods such as solvothermal or liquid phase reaction (that is, there is a certain solvent). The existence of the solvent will produce a large amount of waste liquid, which will increase subsequent processes such as solid-liquid separation and drying, which may Affect the performance of composite materials

Method used

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  • Graphene-tin antimony oxide composite material and dry-method preparation method thereof
  • Graphene-tin antimony oxide composite material and dry-method preparation method thereof

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Embodiment 1

[0052] The graphene-tin-antimony oxide composite material provided in this embodiment is mainly made of graphene oxide and tin-antimony oxide composite. Wherein, the mass ratio of the graphene oxide water body to the tin-antimony oxide composite is 1:1.

[0053] This embodiment also provides a method for preparing graphene-tin antimony oxide composite material:

[0054] Add 27g of concentrated sulfuric acid to 5g of graphite flakes, and slowly add 10g of potassium permanganate during electric stirring to obtain a mixture of concentrated sulfuric acid / graphite flakes / potassium permanganate, which is the first mixed solution, wherein the average particle size of graphite flakes is 1 μm . Continue electric stirring of the first mixed solution and raise the temperature of the water bath to 60° C. and keep it for 5 hours, stop the electric stirring, pour the first mixed solution into 35 g of ice-water mixture, then slowly add 60 g of hydrogen peroxide to it and manually stir until...

Embodiment 2

[0058] The graphene-tin-antimony oxide composite material provided in this embodiment is mainly made of graphene oxide and tin-antimony oxide composite. Wherein, the mass ratio of the graphene oxide water body to the tin-antimony oxide composite is 1:5.

[0059] The concentrated sulfuric acid that present embodiment adopts is 35g, flake graphite is 3g, and the average particle diameter of flake graphite is 3 microns, and potassium permanganate is 12g. The heating temperature is 65° C., the holding time is 4 hours, the amount of ice water added is 20 g, and the amount of hydrogen peroxide added is 70 g. The standing time is 20 hours, the amount of dilute hydrochloric acid added is 8g, the amount of deionized water added is 120g, the centrifugation speed is 13000r / min, the centrifugation time is 20 minutes, and the pH is 6.4.

[0060] 1.6g of graphene oxide was mixed with 9.646g of stannous chloride dihydrate and 2.438g of antimony chloride in a ball mill for 40min. Wherein, t...

Embodiment 3

[0062] The graphene-tin-antimony oxide composite material provided in this embodiment is mainly made of graphene oxide and tin-antimony oxide composite. Wherein, the mass ratio of the graphene oxide water body to the tin-antimony oxide composite is 1:10.

[0063] The concentrated sulfuric acid that present embodiment adopts is 20g, flake graphite is 4g, and the average particle diameter of flake graphite is 2 microns, and potassium permanganate is 15g. The heating temperature is 55° C., the holding time is 3 hours, the amount of ice water added is 40 g, and the amount of hydrogen peroxide added is 80 g. The standing time was 30 hours, the amount of dilute hydrochloric acid added was 10 g, the amount of deionized water added was 80 g, the rotational speed of centrifugation was 12500 r / min, the centrifugation time was 17 minutes, and the pH value was 5.5.

[0064] 1 g of graphene oxide was ground and mixed with 12.06 g of stannous chloride dihydrate and 3.047 g of antimony chlo...

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Abstract

The invention relates to the field of graphene composite materials, in particular to a graphene-tin antimony oxide composite material and a dry-method preparation method thereof. The preparation method comprises the steps that oxidized graphene and a tin antimony oxide compound are mixed on the basis of the mass ratio being 1:(1-10) and ground to be calcinated, wherein the calcination time is 2-4 h, the calcination temperature is 400-800 DEG C. According to the method, no surface active agent or stabilizer or solvent needs to be added, and follow-up treatment processes and liquid waste generation are reduced. The material has the good electrochemical performance.

Description

technical field [0001] The invention relates to the field of graphene composite materials, and in particular to a graphene-tin antimony oxide composite material and a dry preparation method thereof. Background technique [0002] Graphene is a one-atom-thick two-dimensional graphitic carbon nanosheet structure. Due to its large specific surface area and extraordinary electrical conductivity, graphene has shown great potential in biomedical and energy applications. At present, a lot of research is to deposit one or two kinds of transition metal compounds on the surface of graphene to construct binary or multifunctional graphene composite materials, and use the synergistic effect to enhance the transfer and transfer ability of electrons, thereby improving its electrochemical performance. However, such materials are all prepared by reducing graphene oxide, and many toxic reagents such as hydrazine and sodium borohydride are involved in the reduction process. At the same time,...

Claims

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Application Information

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IPC IPC(8): C01G30/00C01B32/184
CPCC01G30/004C01P2002/72C01P2004/04C01P2004/80
Inventor 王文娟李峰王伟
Owner YANCHENG INST OF TECH
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