A kind of synthetic method and application of vanadium oxide
A synthesis method and technology of vanadium oxide, applied in vanadium oxide, active material electrodes, electrochemical generators, etc., can solve problems such as poor controllability, harsh experimental parameters, and difficult microstructure, and achieve smooth surface and large specific surface area , the effect of high battery capacity and cycle stability
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Embodiment 1
[0033] Weigh 0.46g of ammonium metavanadate into a beaker, weigh 50mL of deionized water into the beaker, stir for 30 minutes until the ammonium metavanadate is completely dissolved, add 37% concentrated hydrochloric acid, adjust the pH value to 1.1, at room temperature Continue stirring for 10 minutes; add 0.4 mL of aniline solution (analytical grade), the concentration of aniline in the solution is 86.6 mmol / L, and continue to stir at room temperature for 10 minutes; transfer the above solution into a 90 mL reaction kettle, react at 200 ° C for 24 h, and centrifuge after ethanol and Deionized water was washed and centrifuged three times each, and the product was dried at 50°C under air. The x-ray diffraction pattern of the product is shown in figure 1 , the scanning electron microscope image is shown in figure 2 , see the electrochemical performance test results image 3 .
[0034] from figure 1 It can be seen that the material has high purity and good crystallinity. B...
Embodiment 2
[0038] Weigh 0.46g of ammonium metavanadate into a beaker, measure 50mL of deionized water into the beaker, stir for 30 minutes until the ammonium metavanadate is completely dissolved, add 37% concentrated hydrochloric acid, adjust the pH value to 0.9, at room temperature Continue stirring for 10 minutes; add 0.4 mL of aniline solution (analytical grade), the concentration of aniline in the solution is 86.3 mmol / L, and continue to stir at room temperature for 10 minutes; transfer the above solution into a 90 mL reaction kettle, react at 200 ° C for 24 hours, and centrifuge after ethanol and Deionized water was washed and centrifuged 3 times each, and the product was dried at 50 °C under air. The X-ray diffraction pattern of the product is shown in Figure 4 , for VO 2 (B) Phase structure.
Embodiment 3
[0040] Weigh 0.46g of ammonium metavanadate into a beaker, weigh 50mL of deionized water into the beaker, stir for 30 minutes until the ammonium metavanadate is completely dissolved, add 37% concentrated hydrochloric acid, adjust the pH value to 0.7, at room temperature Continue stirring for 10 minutes; add 0.4 mL of aniline solution (analytical grade), the concentration of aniline in the solution is 85.7 mmol / L, and continue to stir at room temperature for 10 minutes; transfer the above solution into a 90 mL reaction kettle, and react at 200 ° C for 24 h. After centrifugation, ethanol and Deionized water was washed and centrifuged 3 times each, and the product was dried at 50 °C under air. The X-ray diffraction pattern of the product is shown in Figure 5 , for VO2 (B) Phase structure.
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