Preparation method of layered copper sulfide microsphere material for sodium-ion battery with adjustable interlayer spacing and pore volume
A sodium-ion battery, pore volume technology, applied in copper sulfide, battery electrodes, secondary batteries, etc., can solve the problems of long preparation cycle, pollution, easy gas leakage, etc., achieve uniform particle size, large diffusion path, high volume The effect of energy density
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Embodiment 1
[0035] (1) Weigh 0.5 mmol of copper chloride, K 2 Add 0.5 mmol of S and 1 mmol of cetyltrimethylammonium bromide to a mixed solution of water and ethanol (water: ethanol = 1 : 1, a total of 40 mL), and stir for 30 min until all solids are dissolved;
[0036] (2) Put the solution obtained in the above step (1) into a 50 mL autoclave with a polytetrafluoroethylene liner and seal it, keep the temperature at 80 °C for 10 hours, wash the product three times with distilled water and absolute ethanol, After vacuum drying at 60°C for 5 h, copper sulfide microspheres with adjustable layer spacing and pore volume were obtained.
[0037] Depend on figure 1 It can be seen that the XRD pattern of the copper sulfide microsphere material is consistent with PDF#06-0464, and the (002) crystal plane is shifted by 3.8° (10.8 to 7°) at a small angle, which is caused by the expansion of the interlayer distance caused by the embedding of the surfactant , at this time the interlayer spacing is ex...
Embodiment 2
[0045] The preparation method of the layered copper sulfide microsphere material for the sodium ion battery with adjustable layer spacing and pore volume is as follows:
[0046] (1) Weigh 0.8 mmol of cuprous chloride, 0.8 mmol of thioacetamide, and 1 mmol of sodium cholate, add them into the mixed solution of water and ethanolamine (water:ethanolamine = 2:1, a total of 40 mL), stir for 30 min to All solids are dissolved;
[0047] (2) Put the solution obtained in the above step (1) into a 50 mL autoclave with a polytetrafluoroethylene liner and seal it, keep the temperature at 100 °C for 18 hours, wash the product three times with distilled water and absolute ethanol, After vacuum drying at 80 ℃ for 10 h, copper sulfide microspheres with adjustable layer spacing and pore volume were obtained.
[0048] The layered copper sulfide microsphere material with adjustable layer spacing and pore volume is used as the negative electrode material of the sodium ion battery. The ratio of e...
Embodiment 3
[0051] The preparation method of the layered copper sulfide microsphere material for the sodium ion battery with adjustable layer spacing and pore volume is as follows:
[0052] (1) Weigh 1 mmol of copper sulfate, Na 2 Add 1 mmol of S and 2 mmol of sodium lauryl sulfate to a mixed solution of water and isopropanol (water: isopropanol = 3:1, a total of 40 mL), and stir for 30 min until all solids are dissolved;
[0053] (2) Put the solution obtained in the above step (1) into a 50 mL autoclave with a polytetrafluoroethylene liner and seal it, keep the temperature at 120 °C for 15 hours, wash the product three times with distilled water and absolute ethanol, After vacuum drying at 70 ℃ for 10 h, copper sulfide microspheres with adjustable layer spacing and pore volume were obtained.
[0054] The prepared layered copper sulfide microsphere material with adjustable layer spacing and pore volume is used as the negative electrode material of the sodium ion battery. The electrode ma...
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