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A preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material

A composite material, fe2o3 technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of poor conductivity, poor lithium-ion battery effect, poor volume expansion coefficient, etc. The effect of stable product quality, uniform appearance and low cost

Inactive Publication Date: 2014-10-29
海门市凤龙不锈钢制药设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, nano-Fe 2 o 3 It can also be used as a negative electrode material for lithium-ion batteries in secondary batteries, but the nano-Fe obtained by the existing preparation method 2 o 3 Due to its poor conductivity and volume expansion coefficient during charging and discharging, the obtained lithium-ion batteries are often not effective.
[0003] Graphene, as an excellent material and nano-Fe 2 o 3 Combination can solve the defects of the existing technology, and nano-Fe with specific morphology 2 o 3 Embedding into graphene has not been reported so far

Method used

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  • A preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material
  • A preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material
  • A preparing method of a nanometer Fe2O3/rGO composite material and applications of the composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] a) Add 1.1g FeSO 4 ·7H 2 O is dissolved in the mixed liquid of 80ml water and 20ml glycerol to form mixed solution A;

[0036] b) Disperse 0.04 graphite oxide in 40ml of water and ultrasonically disperse for 2 hours to form solution B;

[0037] c) Add solution B to mixed solution A, and stir to form mixed solution C;

[0038] d) Put the mixed solution C into an autoclave, place the autoclave at a temperature of 180°C for 10 hours to obtain the product;

[0039] e) The product was washed several times with absolute ethanol and water, and dried in a vacuum oven at 70°C for several hours to obtain the nano-Fe 2 o 3 / rGO composites.

[0040] The product was identified as α-Fe by X-ray powder diffraction 2 o 3 , powder X-ray diffraction results as figure 1 shown; material morphology by scanning electron microscope, transmission electron microscope as figure 2 , shown in 3, it can be seen from the figure that the nanosheet α-Fe 2 o 3 uniformly embedded in graphene...

Embodiment 2

[0043] a) Add 1.1g FeSO 4 ·7H 2 O is dissolved in the mixed liquid of 70ml water and 20ml glycerol to form mixed solution A;

[0044] b) Disperse 0.04 graphite oxide in 40ml of water and ultrasonically disperse for 2 hours to form solution B;

[0045] c) Add solution B to mixed solution A, and stir to form mixed solution C;

[0046] d) Put the mixed solution C into an autoclave, place the autoclave at a temperature of 140° C. and react for 10 hours to obtain the product;

[0047] e) The product was washed several times with absolute ethanol and water, and dried in a vacuum oven at 70°C for several hours to obtain the nano-Fe 2 o 3 / rGO composites.

[0048] The resulting product was subjected to X-ray powder diffraction as figure 1 Similarly, the material morphology by scanning electron microscopy such as Figure 4 As shown, it can be seen from the figure that the nanosheet-like α-Fe 2 o 3 uniformly embedded in graphene.

Embodiment 3

[0050] a) Add 1.1g FeSO 4 ·7H 2 O is dissolved in the mixed liquid of 80ml water and 20ml glycerol to form mixed solution A;

[0051] b) Disperse 0.04 graphite oxide in 40ml water and ultrasonically disperse for 2.5h to form solution B;

[0052] c) Add solution B to mixed solution A, and stir to form mixed solution C;

[0053]d) Put the mixed solution C into an autoclave, place the autoclave at a temperature of 150° C. to react for 12 hours to obtain the product;

[0054] e) The product was washed several times with absolute ethanol and water, and dried in a vacuum oven at 60°C for several hours to obtain the nano-Fe 2 o 3 / rGO composites.

[0055] The resulting product is identified through X-ray powder diffraction and scanning electron microscopy (with the nano-Fe prepared in Example 1 2 o 3 / rGO composite material) it can be seen that it is nano-Fe 2 o 3 / rGO composites.

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Abstract

The invention relates to the field of preparation of nanometer composite materials, and particularly relates to a preparing method of a nanometer Fe2O3 / rGO composite material and applications of the composite material. The preparing method includes steps of: dissolving Fe2SO4-7H2O into a liquid mixture comprising water and glycerol to form a mixed solution A; dispersing graphite oxide into water and performing ultrasonic dispersion to form a solution B; adding the solution B into the mixed solution A, and stirring uniformly to form a mixed solution C; adding the mixed solution C into a high-pressure reactor, putting the high-pressure reactor into a temperature environment having a temperature of 140-180 DEG C, and reacting 8-12 h to obtain a reaction product; and washing the product with aqueous ethanol and water separately for several times, adding the product into a vacuum drying oven having a temperature of 60-100 DEG C, and drying for several hours to obtain the nanometer Fe2O3 / rGO composite material. The preparing method has characteristics of cheap and easily available raw materials, low cost, simple and feasible synthesis process, stable product quality and good process repeatability.

Description

technical field [0001] The invention relates to the field of preparation of nanocomposite materials, in particular to a nano-Fe 2 o 3 Preparation method and application of rGO composite material. Background technique [0002] Nano Fe 2 o 3 As an important nanomaterial, due to its unique physical and chemical properties, such as small size effect, surface effect, interface effect, etc., it has been widely used in various technical fields. Currently, nano-Fe 2 o 3 It can also be used as a negative electrode material for lithium-ion batteries in secondary batteries, but the nano-Fe obtained by the existing preparation method 2 o 3 Due to its poor conductivity and poor volume expansion coefficient during charging and discharging, the obtained lithium-ion batteries are often ineffective. [0003] Graphene, as an excellent material and nano-Fe 2 o 3 Combination can solve the defects of the existing technology, and nano-Fe with specific morphology 2 o 3 Embedding into g...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/52H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/364H01M4/52H01M10/0525H01M2004/021Y02E60/10
Inventor 陈秀琼
Owner 海门市凤龙不锈钢制药设备有限公司
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