Lithium-ion pre-embedded vanadium pentoxide nanobelt as well as preparation method and application thereof
A vanadium pentoxide nanometer and vanadium pentoxide technology are applied in the field of lithium ion pre-embedded vanadium pentoxide nanobelts and their preparation, which can solve the problems of cycle performance degradation, capacity decay, and limit practical applications, and achieve high performance. Specific capacity, simple process, and the effect of being conducive to market promotion
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Embodiment 1
[0034] The preparation method of lithium ion pre-embedded vanadium pentoxide nanobelt, it comprises the steps:
[0035] 1) Weigh 0.7g SDS (sodium dodecyl sulfate) into 30ml deionized water, stir with a magnetic stirrer for 20 minutes, add 0.1818g V after the SDS is dissolved 2 o 5 Stir for another 20 minutes, then add 2ml of 1mol / L LiOH aqueous solution thereinto, continue to stir for 2 hours, and obtain an orange-yellow transparent aqueous solution;
[0036] 2) Transfer the aqueous solution obtained in step 1) to a 50ml reaction kettle, heat it in water at 180°C for 48 hours, and get a dark green product after taking it out;
[0037] 3) The product obtained in step 2) was centrifuged, washed 5 times with a mixed solution of absolute ethanol and deionized water (volume ratio 1:1), and dried in an oven at 80°C for 12 to 24 hours;
[0038] 4) The dried product obtained in step 3) was heat-treated in a muffle furnace at 600°C for 4 hours at a heating rate of 3°C / min, and a brow...
Embodiment 2
[0045] The preparation method of lithium ion pre-embedded vanadium pentoxide nanobelt, it comprises the steps:
[0046] 1) Weigh 0.7g SDS (sodium dodecyl sulfate) into 30ml deionized water, stir with a magnetic stirrer for 20 minutes, add 0.1818g V after the SDS is dissolved 2 o 5 Stir for another 20 minutes, then add 2ml of 1mol / L LiOH aqueous solution thereinto, continue to stir for 2 hours, and obtain an orange-yellow transparent aqueous solution;
[0047] 2) Transfer the aqueous solution obtained in step 1) to a 50ml reaction kettle, heat it in water at 180°C for 72 hours, and get a dark green product after taking it out;
[0048] 3) The product obtained in step 2) was centrifuged, washed 5 times with a mixed solution of absolute ethanol and deionized water (volume ratio 1:1), and dried in an oven at 80°C for 12 to 24 hours;
[0049] 4) The dried product obtained in step 3) was heat-treated in a muffle furnace at 500°C for 5 hours at a heating rate of 3°C / min, and a brow...
Embodiment 3
[0053] The preparation method of lithium ion pre-embedded vanadium pentoxide nanobelt, it comprises the steps:
[0054] 1) Weigh 0.1818g V 2 o 5 Add it to 30ml of deionized water, stir with a magnetic stirrer for 20 minutes, then add 0.5ml of 1mol / L LiOH aqueous solution to it, and continue stirring for 24 hours to obtain an orange-yellow aqueous solution;
[0055] 2) Transfer the aqueous solution obtained in step 1) to a 50ml reaction kettle, heat it in water at 180°C for 120 hours, and get a dark green product after taking it out;
[0056] 3) The product obtained in step 2) was centrifuged, washed 5 times with a mixed solution of absolute ethanol and deionized water (volume ratio 1:1), and dried in an oven at 80°C for 12 to 24 hours;
[0057] 4) The dried product obtained in step 3) was heat-treated in a muffle furnace at 400°C for 8 hours at a heating rate of 3°C / min, and a brown sample was obtained after heat treatment;
[0058] 5) Wash the sample obtained in step 4) wi...
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