A kind of preparation method of nickel oxide/multi-walled carbon nanotube electrode material
A technology of multi-walled carbon nanotubes and electrode materials, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, can solve the problems of little research on the electrochemical performance of supercapacitors, and achieve high product conversion efficiency and high purity , the effect of high mesoporosity
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Embodiment 1
[0038] (1) 2.4mmol NiSO 4 ·6H 2 O, 0.1g PVP, 12mmol CO(NH 2 ) 2 Dissolve in 30ml double distilled water, stir magnetically until uniformly mixed to obtain a clear mixed solution;
[0039] (2) 20 mg of multi-walled carbon nanotubes were added to 30 ml of absolute ethanol, and ultrasonically treated for 30 min to obtain a suspension;
[0040] (3) Add the suspension prepared in step (2) to the mixed solution prepared in step (1), stir magnetically for 30min, transfer to a 100ml autoclave with a polytetrafluoroethylene liner, and heat to 100°C, and constant temperature reaction for 8h;
[0041] (4) Suction filter the product after the solvothermal reaction in step (3), wash it several times with double distilled water and absolute ethanol respectively, and dry at 70° C. for 12 hours to obtain a precursor;
[0042] (5) The precursor obtained in step (4) was transferred to a tube furnace, and calcined at a constant temperature of 400° C. for 2 hours in an inert atmosphere, to o...
Embodiment 2
[0056] (1) 2.4mmol NiSO 4 ·6H 2 O, 0.1g PVP, 7.2mmol CO(NH 2 ) 2 Dissolve in 30ml double distilled water, stir magnetically until evenly mixed to obtain a clear mixed solution;
[0057] (2) 20 mg of multi-walled carbon nanotubes were added to 30 ml of absolute ethanol, and ultrasonically treated for 30 min to obtain a suspension;
[0058] (3) Add the suspension prepared in step (2) to the mixed solution prepared in step (1), stir magnetically for 30min, transfer to a 100ml autoclave with a polytetrafluoroethylene liner, and heat to 120°C, and constant temperature reaction for 6h;
[0059] (4) Suction filter the product after the solvothermal reaction in step (3), wash it several times with double distilled water and absolute ethanol respectively, and dry at 70° C. for 12 hours to obtain a precursor;
[0060] (5) The precursor prepared in step (4) was transferred to a tube furnace, and calcined at a constant temperature of 420° C. for 2 hours in an inert atmosphere to obta...
Embodiment 3
[0063] (1) 2.4mmol NiSO 4 ·6H 2 O, 0.1g PVP, 12mmol CO(NH 2 ) 2 Dissolve in 30ml double distilled water, stir magnetically until evenly mixed to obtain a clear mixed solution;
[0064] (2) 20 mg of multi-walled carbon nanotubes were added to 30 ml of absolute ethanol, and ultrasonically treated for 30 min to obtain a suspension;
[0065] (3) Add the suspension prepared in step (2) to the mixed solution prepared in step (1), stir magnetically for 30min, transfer to a 100ml autoclave with a polytetrafluoroethylene liner, and heat to 90°C, and constant temperature reaction for 12h;
[0066] (4) Suction filter the product after the solvothermal reaction in step (3), wash it several times with double distilled water and absolute ethanol respectively, and dry at 70° C. for 12 hours to obtain a precursor;
[0067] (5) The precursor obtained in step (4) was transferred to a tube furnace, and calcined at a constant temperature of 380° C. for 3 hours in an inert atmosphere, to obta...
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