Preparation method of coal tar pitch resin-based amorphous carbon-coated few-layer molybdenum disulfide nanometer box for negative electrode of sodium-ion battery and application of nanometer box
A technology of amorphous carbon and molybdenum disulfide, applied in battery electrodes, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as easy pollution of the environment, complex preparation process, unfavorable large-scale production, etc., to achieve Effects of suppression of volume change, wide range of sources, and excellent cycle performance
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Embodiment 1
[0019] At room temperature, add 100g of saturated aqueous sodium chloride solution dropwise to 500g of absolute ethanol, filter with suction and dry the filter cake at 100°C for 2 hours to obtain a sodium chloride template; dissolve 2g of coal tar pitch resin in 60g of nitrogen-methylpyrrolidone , add 3g ammonium tetrathiomolybdate, 1g pore-forming agent polymethyl methacrylate, add 20g sodium chloride template after completely dissolving, stir and heat in 205 ℃ oil bath and evaporate to dry nitrogen methyl pyrrolidone; The mixture was carbonized, and the temperature was raised to 700°C at 5°C / min under the protection of argon in a tube furnace, kept at a constant temperature for 2h, cooled to room temperature and taken out, then the sodium chloride template was washed with deionized water, and dried at 90°C for 8h to obtain the target Materials Coal tar pitch resin-based amorphous carbon coated few-layer molybdenum disulfide nanoboxes. Its scanning electron microscope picture...
Embodiment 2
[0021] At room temperature, add 150g of saturated aqueous sodium chloride solution dropwise to 1000g of absolute ethanol, filter with suction and dry the filter cake at 100°C for 2 hours to obtain a sodium chloride template; dissolve 2g of coal tar pitch resin in 40g of nitrogen-methylpyrrolidone , add 3g ammonium tetrathiomolybdate, 2g pore-forming agent polymethyl methacrylate, add 20g sodium chloride template after completely dissolving, stir and heat in 200 ℃ oil bath and evaporate dry nitrogen methyl pyrrolidone; The mixture was carbonized, and the temperature was raised to 800°C at 5°C / min under the protection of argon in a tube furnace, kept at a constant temperature for 1h, cooled to room temperature and taken out, then the sodium chloride template was washed with deionized water, and dried at 90°C for 10h to obtain the target Materials Coal tar pitch resin-based amorphous carbon coated few-layer molybdenum disulfide nanoboxes. The target material, acetylene black, and...
Embodiment 3
[0023] At room temperature, add 130g of saturated aqueous sodium chloride solution dropwise to 700g of absolute ethanol, filter with suction and dry the filter cake at 80°C for 10 hours to obtain a sodium chloride template; dissolve 2g of coal tar pitch resin in 80g of nitrogen-methylpyrrolidone , add 2g ammonium tetrathiomolybdate, 1g pore-forming agent polymethyl methacrylate, add 20g sodium chloride template after completely dissolving, stir and heat in 200 ℃ oil bath and evaporate to dry nitrogen methyl pyrrolidone; The mixture was carbonized, and the temperature was raised to 700°C at 5°C / min under the protection of argon in a tube furnace, kept at a constant temperature for 2h, cooled to room temperature and taken out, then the sodium chloride template was washed with deionized water, and dried at 90°C for 8h to obtain the target Materials Coal tar pitch resin-based amorphous carbon coated few-layer molybdenum disulfide nanoboxes. The target material, acetylene black, an...
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