Manufacturing method of flexible low-temperature-resistant water-based supercapacitor
A technology for supercapacitors and manufacturing methods, which is applied in the field of nanomaterials and functional devices, can solve problems such as high cost and complicated process, and achieve the effects of reducing the size of the sheet, simple process, and improving the rapid decline in diffusion rate
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Embodiment 1
[0025] Take 2g Ti 3 AlC 2 Add the powder (MAX) into the beaker, add 20ml of 9mol / L HCl and 2gLiF mixed solution, stir, and etch at room temperature for 24 hours. Ti will be obtained after etching 3 C 2 The MXene solid was washed with deionized water until pH = 6-7, and baked in a blast oven at 80°C for 12 hours.
[0026] Ti 3 C 2 MXene powder was added to deionized water to form a suspension of 0.5 mg / ml, and the obtained solution was centrifuged under the protection of argon atmosphere and 900 W ultra-high power ultrasonic for 6 hours in an ice bath environment, and the supernatant was taken.
[0027] Set the freezer temperature of the low-temperature drying box at -60°C for 2 hours, then put the obtained supernatant in the freezer for quick freezing, and after 4 hours of heat preservation, move it to the drying bin for 24 hours to obtain a flocculent powder such as figure 2 As shown, the MXene flexible electrode was directly compacted at 8Mpa.
[0028] Commercial c...
Embodiment 2
[0030] Take 2g Ti 3 AlC 2 Add the powder (MAX) into the beaker, add 20ml of 9mol / L HCl and 2gLiF mixed solution, stir, and etch at room temperature for 24 hours. Ti will be obtained after etching 3 C 2 The MXene solid was washed with deionized water until pH = 6-7, and baked in a blast oven at 80°C for 12 hours.
[0031] Ti 3 C 2 MXene powder was added to deionized water to form a suspension of 0.8 mol / L. After 6 hours of ultra-high power ultrasonication at 1000W under the protection of argon atmosphere and an ice bath environment, the resulting solution was centrifuged, and the supernatant was taken.
[0032] Set the temperature of the freezer in the low-temperature drying box at -60°C for 2 hours, then put the obtained supernatant in the freezer for quick freezing, and after 4 hours of heat preservation, move it to the drying bin for 24 hours to obtain flocculent powder. 8Mpa direct compaction as MXene flexible electrode.
[0033] Finally, the commercial carbon clot...
Embodiment 3
[0036] Take 1g V 2Add AlC powder (MAX) into a beaker, add a mixed solution of 10ml 9M HCl and 1gLiF, stir, and etch at room temperature for 24 hours. After etching will result in V 2 The C MXene solid was washed with deionized water to pH = 6-7, and baked in a blast oven at 80°C for 12 hours.
[0037] the resulting V 2 C MXene powder was added to deionized water to form a 0.2mol / L suspension, and the obtained solution was centrifuged to obtain the supernatant after 5 hours of ultra-high power ultrasonication at 850W under the protection of an argon atmosphere and an ice bath environment.
[0038] Set the temperature of the freezer in the low-temperature drying box at -70°C for 2 hours, then put the obtained supernatant in the freezer for quick freezing, and after 4 hours of heat preservation, move it to the drying bin for 18 hours to obtain flocculent powder. 8Mpa direct compaction as MXene flexible electrode.
[0039] Commercial carbon cloth and MXene flexible electrodes ...
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