SnO<2>-TiO<2>@ graphene ternary composite nanomaterial and preparation method thereof

A ternary composite, nanomaterial technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as limited application, and achieve good dispersion, mild conditions, and high yield. Effect

Active Publication Date: 2016-04-27
SHANGHAI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of low capacity of ti...

Method used

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  • SnO&lt;2&gt;-TiO&lt;2&gt;@ graphene ternary composite nanomaterial and preparation method thereof
  • SnO&lt;2&gt;-TiO&lt;2&gt;@ graphene ternary composite nanomaterial and preparation method thereof
  • SnO&lt;2&gt;-TiO&lt;2&gt;@ graphene ternary composite nanomaterial and preparation method thereof

Examples

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Embodiment 1

[0019] a. Use a measuring cylinder to measure 40ml deionized water and 20ml ethanol respectively, put them into a beaker and mix them evenly;

[0020] b. Weigh 50 mg of pyrolysis-reduced graphene oxide with an electronic balance and add it to the above solution for 2 h to make it evenly mixed;

[0021] c. Add 550mg CTAB to the above mixed solution, stir evenly, add 2ml concentrated hydrochloric acid, and continue stirring for 40min;

[0022] d. Weigh 50mg SnCl with an electronic balance 2 2H 2 O was added to the above solution, continued to stir for 1h, and then added 50mg TiOSO 4 In the above solution, continue stirring for 1 h;

[0023] e. Pour the above mixed solution into a high-pressure reactor with a polytetrafluoroethylene liner, and react at 180°C for 24 hours;

[0024] f. After the reaction is completed, take the product out of the reactor, wash and centrifuge it repeatedly with deionized water and ethanol, and dry the product at 60°C to obtain the uniform SnO pre...

Embodiment 2

[0027] The preparation process and steps of this embodiment are basically the same as in Example 1, except that the d step:

[0028] Weigh 50mgSnCl with an electronic balance 2 2H 2 O was added to the above solution, continued to stir for 1h, and then added 100mg TiOSO 4 In the above solution, continue to stir for 1h.

[0029] The obtained results are basically similar to those of Example 1, except that in the obtained nanomaterials, more oxide particles are aggregated and cannot be completely loaded on the graphene.

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Abstract

The invention relates to a preparation method of an SnO<2>-TiO<2>@ graphene ternary composite nanomaterial. By a one-step method, with pyrolyzed and reduced graphene oxide, stannous chloride hydrate (SnCl<2>.2H<2>O) and titanyl sulfate (TiOSO<4>) as raw materials, and water and ethanol as solvents, the SnO<2>-TiO<2>@ graphene ternary composite nanomaterial with a uniform structure is obtained under the action of hydrochloric acid by a simple hydrothermal synthesis method. From an XRD spectrogram, according to the prepared SnO<2>-TiO<2>@ graphene ternary composite nanomaterial, crystalline phases of two metal oxides SnO<2> and TiO<2> coexist in the composite material; and the SnO<2>-TiO<2>@ graphene ternary composite nanomaterial prepared by the method has a potential application prospect in the fields of new energy and the like.

Description

technical field [0001] The present invention relates to a kind of SnO 2 -TiO 2 Graphene ternary composite nanomaterial and preparation method thereof. Background technique [0002] Since the successful commercialization of lithium-ion batteries in the 1990s, many studies have focused on how to improve the energy density of battery anode materials due to the limitation of the theoretical specific capacity of market-oriented graphite anode materials. The goal is to obtain materials with better physical and chemical properties, such as high reversible capacity, stable structure, fast lithium ion diffusion rate, cheap price, and environmental friendliness. Among them, many metal oxides are favored because of their high theoretical capacity. Such as SnO 2 , Fe 3 o 4 , Fe 2 o 3 、Co 3 o 4 and MnO 2 Wait. In particular, tin dioxide semiconductor oxides with excellent properties have been widely used in various fields such as adsorption, catalysis, and new energy. Because...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/485B82Y30/00
CPCB82Y30/00H01M4/364H01M4/366H01M4/485H01M2004/021Y02E60/10
Inventor 张海娇高仁美李立昂徐来强王艺佳
Owner SHANGHAI UNIV
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