Preparation method of MnO2/V2O3 nano composite material
A nanocomposite material and nanorod technology, which is applied in the field of preparation of MnO2/V2O3 nanocomposite materials, can solve the problems of poor electrochemical performance and low capacity, and achieve the effects of high yield, low energy consumption and excellent electrochemical performance.
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Embodiment 1
[0023] 1) Dissolve 100mg of potassium permanganate in 50ml of water and stir until it is completely dissolved, then conduct a hydrothermal reaction at 140°C for 9 hours to obtain manganese dioxide nanorods;
[0024] 2) Take 62.5 mg of manganese dioxide nanorods and add them to a mixture of 25 ml of water and 5 ml of ammonia water, stir evenly, add 50 mg of ammonium metavanadate and stir at a speed of 500 r / min on a magnetic stirrer for 30 min at room temperature to obtain solution A;
[0025] 3) Take 150 mg of thioacetamide and add it to solution A, and stir it on a magnetic stirrer at a speed of 500 r / min for 60 minutes at room temperature to obtain solution B;
[0026] 4) Transfer solution B to a polytetrafluoroethylene liner at a filling ratio of 40%, put it in an oven for solvothermal reaction at 160°C for 18 hours;
[0027] 5) The product of the solvothermal reaction is collected by suction filtration, the collected product is washed alternately with water and ethanol, an...
Embodiment 2
[0029] 1) Dissolve 100 mg of potassium permanganate in 50 ml of water and stir until it is completely dissolved, then add 1 ml of glacial acetic acid and conduct a hydrothermal reaction at 140° C. for 12 hours to obtain manganese dioxide nanorods;
[0030] 2) Take 70 mg of manganese dioxide nanorods and add them to the mixed solution of 30 ml of water and 6 ml of ammonia water, stir evenly, add 70 mg of ammonium metavanadate and stir at a speed of 700 r / min on a magnetic stirrer for 10 min at room temperature to obtain solution A;
[0031] 3) Take 250 mg of thioacetamide and add it to solution A, and stir it on a magnetic stirrer at a speed of 700 r / min for 30 minutes at room temperature to obtain solution B;
[0032] 4) Transfer solution B to a polytetrafluoroethylene liner at a filling ratio of 48%, put it in an oven for solvothermal reaction at 180°C for 18 hours;
[0033] 5) The product of the solvothermal reaction is collected by suction filtration, the collected product ...
Embodiment 3
[0036] 1) Dissolve 150mg of potassium permanganate in 75ml of water and stir until it is completely dissolved, then conduct a hydrothermal reaction at 160°C for 12 hours to obtain manganese dioxide nanorods;
[0037] 2) Take 60 mg of manganese dioxide nanorods and add them to a mixture of 25 ml of water and 5 ml of ammonia water, stir evenly, add 80 mg of ammonium metavanadate, and stir at a speed of 600 r / min on a magnetic stirrer for 20 min at room temperature to obtain solution A;
[0038] 3) Add 280 mg of thioacetamide to solution A according to the mass ratio of ammonium metavanadate to thioacetamide as 1:3~4, and stir on a magnetic stirrer at a speed of 600 r / min for 45 minutes at room temperature to obtain a solution B;
[0039] 4) Transfer solution B to a polytetrafluoroethylene liner at a filling ratio of 40%, put it in an oven for solvothermal reaction at 200°C for 18 hours;
[0040] 5) The product of the solvothermal reaction is collected by suction filtration, the...
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