Preparation method of lithium-sulfur battery positive pole piece
A positive pole piece, lithium-sulfur battery technology, applied in the field of lithium-ion battery preparation, can solve the problems of low actual capacity and cycle life of the battery, low conductivity of active material sulfur, low battery charging efficiency, etc., to improve the electrode preparation process, The effect of high conductivity and high porosity
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Embodiment 1
[0025] The nickel foam discs cut into 12 mm discs were ultrasonically treated with acetone, acetic acid, and ethanol in sequence, and each step was sonicated for 10 min. After the cleaned nickel foam sheet is dried under a nitrogen atmosphere, as a carbon nanotube growth substrate and catalyst, the nickel foam disk is coated with melamine at a mass ratio of 1:5, placed in a quartz boat or a porcelain boat, and the experimental device is used Such as figure 1 As shown, by the chemical vapor deposition method, the temperature was raised to 800 ℃ with a hydrogen flow rate of 50 sccm, and after reaching 800 ℃, under the reducing atmosphere of hydrogen: argon = 1:5 (10 sccm: 50 sccm), in a tube furnace The temperature was kept constant for 30 min. After the growth process was over, the tube furnace was lowered to room temperature with an argon flow rate of 30 sccm, and the samples were taken out to obtain nickel foam wafers with carbon nanotubes grown on them.
[0026] The mass ra...
Embodiment 2
[0028] The nickel foam discs cut into 12 mm discs were ultrasonically treated with acetone, acetic acid, and ethanol in sequence, and each step was sonicated for 10 min. After the cleaned foamed nickel sheet is dried under a nitrogen atmosphere, as a carbon nanotube growth substrate and a catalyst, the foamed nickel disk is coated with dicyandiamide at a mass ratio of 1:3, placed in a quartz boat or a porcelain boat, and used Experimental device such as figure 1 As shown, by the chemical vapor deposition method, the temperature was raised to 700 ℃ with a hydrogen flow rate of 50 sccm, and after reaching 700 ℃, under the reducing atmosphere of hydrogen: argon = 1:5 (10 sccm: 50 sccm), in a tube furnace The temperature was kept constant for 30 min. After the growth process was over, the tube furnace was lowered to room temperature with an argon flow rate of 30 sccm, and the samples were taken out to obtain nickel foam wafers with carbon nanotubes grown on them.
[0029] The mas...
Embodiment 3
[0031] The nickel foam discs cut into 12 mm discs were ultrasonically treated with acetone, acetic acid, and ethanol in sequence, and each step was sonicated for 10 min. After the cleaned nickel foam sheet is dried under a nitrogen atmosphere, as a carbon nanotube growth substrate and catalyst, the nickel foam disk is coated with glucose at a mass ratio of 1:4, placed in a quartz boat or a porcelain boat, and the experimental device is used Such as figure 1 As shown, by the chemical vapor deposition method, the temperature was raised to 900 ℃ with a hydrogen flow rate of 50 sccm, and after reaching 900 ℃, under the reducing atmosphere of hydrogen: argon = 1:5 (10 sccm: 50 sccm), in a tube furnace The temperature was kept constant for 30 min. After the growth process was over, the tube furnace was lowered to room temperature with an argon flow rate of 30 sccm, and the samples were taken out to obtain nickel foam wafers with carbon nanotubes grown on them.
[0032] The mass rat...
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