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Preparation method of transition metal oxide/graphene nano composite material

A technology of nanocomposite materials and transition metals, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of unfavorable commercial synthesis, poor product stability, large particle size, etc., and achieve uniform size , low synthesis temperature and small particle size

Inactive Publication Date: 2016-10-26
NANCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a kind of preparation method of transition metal oxide / graphene nanocomposite material, to solve the traditional preparation method of transition metal oxide / graphene nanocomposite material time-consuming long, the purity is low, the granularity is bigger, the product Poor stability, low yield, unfavorable for commercial synthesis and other issues, this method has low energy consumption, short time consumption, easy operation, and no pollution to the environment

Method used

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  • Preparation method of transition metal oxide/graphene nano composite material
  • Preparation method of transition metal oxide/graphene nano composite material
  • Preparation method of transition metal oxide/graphene nano composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Weigh 1.010 g Fe(NO 3 ) 3 9H 2 O, added to 400 ml of graphene oxide dispersion with a concentration of 1g / L, then added 0.3145 g of glycine, stirred and ultrasonicated for 30 minutes to obtain a uniform dispersion, heated and concentrated until viscous, and placed in a heating furnace with a temperature of 500 °C Internal ignition, after the combustion is completed, cool down to room temperature to obtain the iron oxide / graphene nanocomposite material.

Embodiment 2

[0022] Weigh 0.7218g Ni(NO 3 ) 2 ·6H 2 O, added to 400ml of graphene oxide dispersion with a concentration of 1g / L, then added 0.208g of glycine, stirred and ultrasonicated for 30 minutes to obtain a uniform dispersion, heated and concentrated until viscous, and placed in a heating furnace at a temperature of 500°C Ignite, after the combustion is completed, cool to room temperature to obtain the nickel oxide / graphene nanocomposite nanomaterial.

Embodiment 3

[0024] Weigh 0.722g Co(NO 3 ) 2 ·6H 2 O, added to 400ml of graphene oxide dispersion with a concentration of 1g / L, then added 0.208g of glycine, stirred and ultrasonicated for 30 minutes to obtain a uniform dispersion, heated and concentrated until viscous, and placed in a heating furnace at a temperature of 500°C Ignite, after the combustion is completed, cool down to room temperature to obtain tricobalt tetroxide / graphene nanocomposite nanomaterials.

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Abstract

A preparation method of a transition metal oxide / graphene nano composite material comprises the following steps: (1) according to the loading amount of a transition metal oxide on graphene and the preparation amount of a target product, weighing transition metal nitrate, and dissolving the transition metal nitrate in an aqueous dispersion liquid of graphene oxide; (2) adding a proper amount of an organic fuel into the dispersion liquid of the step (1), and stirring and carrying out ultrasonic treatment to obtain an uniform dispersion liquid; and (3) heating and concentrating the dispersion liquid obtained in the step (2) to be viscous, then putting into a heating furnace with the temperature of 300-900 DEG C, igniting, and after completing combustion, cooling to room temperature to obtain a final product. The preparation method has the advantages of low synthesis temperature, short time, simple implementation, low cost, small particle size of transition metal oxide, uniform size and uniform dispersion in graphene, and is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and relates to a preparation method for carbon-based nanocomposite materials. technical background [0002] Graphene-based anode materials for lithium batteries have better conductivity, higher specific surface area, better chemical stability, and wider electrochemical window than graphite materials. As anode materials for lithium-ion secondary batteries, they have huge potential. However, the cost of pure graphene is high when it is prepared by physical method, and it is easy to stack again during the preparation process by reduced graphite oxide method, which is very unfavorable for the complete intercalation / extraction of lithium ions. Therefore, when graphene is used as a battery negative electrode material, other inorganic materials are usually added to improve its capacity properties. Oxides of transition metals Co, Fe, Ni, etc. have strong activity on lithium ions and high rev...

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M4/50H01M4/52H01M4/583H01M4/1391H01M4/1393B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/1391H01M4/1393H01M4/362H01M4/483H01M4/502H01M4/523H01M4/583Y02E60/10
Inventor 陈伟凡周文威许云鹏卓明鹏郭兰玉张文星
Owner NANCHANG UNIV