A kind of preparation method and application of nano fe2o3/rgo composite material
A composite material, fe2o3 technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of poor conductivity, poor volume expansion coefficient, poor effect of lithium-ion batteries, etc., to achieve The effect of stable product quality, low cost and uniform appearance
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Embodiment 1
[0032] 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;
[0033] b) Disperse 0.04 graphite oxide in 40ml of water and ultrasonically disperse for 2 hours to form solution B;
[0034] c) Add solution B to mixed solution A, and stir to form mixed solution C;
[0035] 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;
[0036] 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.
[0037] 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
[0040] 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;
[0041] b) Disperse 0.04 graphite oxide in 40ml of water and ultrasonically disperse for 2 hours to form solution B;
[0042] c) Add solution B to mixed solution A, and stir to form mixed solution C;
[0043] 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;
[0044] 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.
[0045] 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
[0047] 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;
[0048] b) Disperse 0.04 graphite oxide in 40ml water and ultrasonically disperse for 2.5h to form solution B;
[0049] c) Add solution B to mixed solution A, and stir to form mixed solution C;
[0050] 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;
[0051]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.
[0052] 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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