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a nano sno 2 Particle/multilayer graphene composite material and preparation method

A technology of multi-layer graphene and composite materials, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of uneven distribution of nano-SnO2, high cost of graphene oxide preparation, and large environmental pollution and other problems, to achieve the effect of easy industrial production, good conductivity, and uniform distribution

Active Publication Date: 2021-05-28
浙江科宇电子科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

However, the preparation cost of graphene oxide is relatively high, and the environmental pollution is relatively large.
At the same time, the prepared nano-SnO 2 Uneven distribution, large particles

Method used

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  • a nano sno <sub>2</sub> Particle/multilayer graphene composite material and preparation method
  • a nano sno <sub>2</sub> Particle/multilayer graphene composite material and preparation method
  • a nano sno <sub>2</sub> Particle/multilayer graphene composite material and preparation method

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Embodiment Construction

[0026]In order to better illustrate the flow and scheme of the present invention, the following invention will be made in conjunction with the accompanying drawings and examples. DETAILED DESCRIPTION OF THE INVENTION The present invention is not intended to limit the invention.

[0027]In order to solve the technical problems in existing technologies, seefigure 1 The present invention is proposed for the present invention to present a nanometer SNO2Preparation of particles / multilayer graphene composite materials, including the following steps:

[0028]Step S10, the amount of DMF and deionized water having a volume ratio of 8: 2, and mixed as a mixed solvent A after mixing.

[0029]Step S20, weigh a certain amount of expanded graphite addition in mixed solvent A, and ultrasoundally peelable the expansion graphite is uniformly dispersed in a solvent and obtain a multilayer graphene dispersion, wherein expanded graphite relative to solvent A The concentration is 0.5 ~ 2mg / ml;

[0030]Step S30,...

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Abstract

The invention discloses a nano-SnO prepared from tin powder 2 Particle / multilayer graphene composite material and preparation method thereof, based on the multilayer graphene sheet obtained after ultrasonic expansion of graphite, the prepared SnO 2 Evenly distributed on the surface of multilayer graphene, SnO 2 The particle size is below 15 nanometers, and the particles are continuously distributed. The invention adopts a kind of metal tin as a raw material, which is slowly dissolved into tin ions in a small amount of dilute nitric acid solution, and gradually deposited on the surface of multi-layer graphene to prepare nano-SnO with small particle size and uniform distribution. 2 . The process is simple, the controllability is strong, and it is suitable for industrialized production.

Description

Technical field[0001]The invention belongs to the field of material technology, and more particularly to a nanometer SNO.2Particle / multilayer graphene composite material and preparation method. The prepared material has potential applications in lithium ion battery negative electrode materials and gas sensor materials.Background technique[0002]Sno2It is an important semiconductor sensor material that is highly sensitive with high sensitivity of gas sensitors, which is widely used in various combustible gases, environmental pollution gases, industrial exhaust gases, and harmful gas detection and forecasting. Sno2It is also an important lithium-ion battery negative electrode material that is concerned with superior cycle stability, and the theoretical capacity (783mAh / g) is twice the commercial graphite. Nano-scale SNO2It has a high specific surface area, which has a significant dimensional effect during gas sensing and repository. Get uniform nanoma-scale SNO2Higher performance c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/62B82Y30/00
CPCB82Y30/00H01M4/366H01M4/48H01M4/625H01M2004/021H01M2004/027Y02E60/10
Inventor 章林娟徐军明高惠芳武军
Owner 浙江科宇电子科技有限公司