Nanosheet self-assembled vanadium pentoxide nanorod and its preparation method and application
A vanadium pentoxide nanometer and nanosheet technology, which is applied in the field of nanosheet self-assembled vanadium pentoxide nanorods and its preparation, can solve the problem of the need to improve the rate performance of the vanadium pentoxide electrode, poor conductivity of metal oxides, and battery quality. Improve the conductivity, shorten the transmission path, and improve the battery cycle and rate performance
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Embodiment 1
[0040] (1) Take 0.5 gram of sodium metavanadate, 30 milliliters of ammonia water (commercially available, concentration 25w / w%), and 3 milliliters of hydrazine hydrate (commercially available, concentration 80w / w%) respectively and place them under strong magnetic stirring for 30 minutes after mixing. In the reactor, the reactor is a high-temperature and high-pressure reactor, which has a metal shell, and a sealed polytetrafluoroethylene or glass lining is arranged in the metal shell;
[0041] (2) After tightening the reactor, put it into a constant temperature box, set the reaction temperature to 230°C, and the reaction time to 24 hours, and naturally cool to room temperature after the reaction is completed;
[0042] (3) After opening the step polymerization (2) reaction kettle, take out the sample and wash it 3 times with deionized water and absolute ethanol, and put it in a thermostat for 24 hours at 60°C; further place the dried sample Calcination was carried out in a muff...
Embodiment 2
[0045] (1) Measure 0.2 gram of sodium metavanadate, 30 milliliters of ammonia water (commercially available, concentration 25w / w%), and 3 milliliters of hydrazine hydrate (commercially available, concentration 80w / w%) respectively and place them under strong magnetic stirring for 30 minutes after mixing. In the reactor, the reactor is a high-temperature and high-pressure reactor, which has a metal shell, and a sealed polytetrafluoroethylene or glass lining is arranged in the metal shell;
[0046] (2) After tightening the reactor, put it into a constant temperature box, set the reaction temperature to 230°C, and the reaction time to 24 hours, and naturally cool to room temperature after the reaction is completed;
[0047] (3) After opening the reaction kettle of step polymerization (2), take out the sample and wash it three times with deionized water and absolute ethanol, and dry it in a constant temperature box at 60° C. for 24 hours. Figure 5 For reducing the sodium metavana...
Embodiment 3
[0049] (1) Take 0.5 g of sodium metavanadate, 0.3 g of hexamethylenetetramine, 30 ml of ammonia water (commercially available, concentration 25w / w%), and 3 ml of hydrazine hydrate (commercially available, concentration 80w / w%) Strongly magnetically stirred for 30 minutes and then mixed in the reactor. The reactor is a high-temperature and high-pressure reactor with a metal shell, and a sealed polytetrafluoroethylene or glass lining is arranged in the metal shell;
[0050] (2) After tightening the reactor, put it into a constant temperature box, set the reaction temperature to 230°C, and the reaction time to 24 hours, and naturally cool to room temperature after the reaction is completed;
[0051] (3) After opening the reaction kettle of step polymerization (2), take out the sample and wash it three times with deionized water and absolute ethanol, and dry it in a constant temperature box at 60° C. for 24 hours. Figure 6 For adding 0.3g tensio-active agent hexamethylenetetramin...
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