Multi-hole nanometer copper oxide composite material, method for preparing same, supercapacitor electrodes and supercapacitor
A nano-copper oxide and composite material technology, which is applied in the field of nano-materials, can solve the problems of difficult preparation of supercapacitor electrodes, difficult to meet application requirements, poor conductivity, etc., and achieve long charge-discharge cycle life, good crystal shape, and small attenuation effects.
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Embodiment 1
[0034] A porous nano-copper oxide composite material is composed of porous nano-copper oxide grown on a copper substrate, and the porous nano-copper oxide is tiled on the copper substrate in a three-dimensional network.
[0035] A preparation method of a porous nano-copper oxide composite material, the steps comprising:
[0036] a. Put the copper sheet into acetone, ethanol, dilute hydrochloric acid, and water in sequence, and perform ultrasonic cleaning; the ultrasonic cleaning time in acetone, ethanol, dilute hydrochloric acid, and water is 12, 15, 12, and 10 min respectively, and the concentration of the dilute hydrochloric acid is 3mol / L;
[0037] b. Add 20mL of 0.005mol / L potassium permanganate solution into the reaction kettle, and then 2 , the copper piece with a length of 4cm is immersed in potassium permanganate solution, tighten the lid of the reaction kettle, react at 100°C for 4 hours, cool to room temperature, take out the copper piece after reaction, clean it w...
Embodiment 2
[0044] A porous nano-copper oxide composite material is composed of porous nano-copper oxide grown on a copper substrate, and the porous nano-copper oxide is tiled on the copper substrate in a three-dimensional network.
[0045] A preparation method of a porous nano-copper oxide composite material, the steps comprising:
[0046] a. Put the copper sheet into acetone, ethanol, dilute hydrochloric acid, and water successively, and perform ultrasonic cleaning; the ultrasonic cleaning time in acetone, ethanol, dilute hydrochloric acid, and water is 15, 10, 10, and 15 min respectively, and the concentration of the dilute hydrochloric acid is 5 mol / L;
[0047] b. Add 20mL of 0.001mol / L potassium permanganate solution into the reaction kettle, and then 2, immerse the copper piece with a length of 4cm in the potassium permanganate solution, tighten the lid of the reaction kettle, react at 150°C for 8 hours, cool to room temperature, take out the copper piece after reaction, clean it ...
Embodiment 3
[0051] A porous copper oxide nanocomposite material consists of porous copper oxide nanomaterials grown on a copper substrate.
[0052] A method for preparing a porous copper oxide nanocomposite material, the steps comprising:
[0053] a. Put the copper sheet into acetone, ethanol, dilute hydrochloric acid, and water in turn, and perform ultrasonic cleaning; the ultrasonic cleaning time in acetone, ethanol, dilute hydrochloric acid, and water is 15, 10, 15, and 15 min respectively, and the concentration of the dilute hydrochloric acid is 4mol / L;
[0054] b. Add 20mL of 0.01mol / L potassium permanganate solution into the reaction kettle, and then make the 2 , immerse the copper piece with a length of 4cm in the potassium permanganate solution, tighten the lid of the reaction kettle, react at 50°C for 2 hours, cool to room temperature, take out the copper piece after reaction, clean it with distilled water and absolute ethanol, and dry it at room temperature. Porous copper oxi...
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