One-dimensional micro-nanorod LiMgVO4 material and preparation method thereof
A micro-nano, rod-shaped technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of large particle size, low sample purity, difficult to control, etc., and achieve high material purity, good crystal morphology, and size. small effect
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[0030] Example 1:
[0031] In molar ratio (LiOH·H 2 O:MgO:NH 4 VO 3 =1:1:1), respectively weigh 0.316g of lithium hydroxide, 0.276g of magnesium oxide and 0.800g of ammonium metavanadate as raw materials, and grind the raw materials for 15min to mix uniformly; another weighed 1.454g Of sodium nitrate and 1.729g of potassium nitrate, grind for 15 minutes to make them evenly mixed, as the mixed molten salt (NaNO 3 -KNO 3 ). The molten salt and the raw materials were mixed and ground for 2 minutes to obtain a precursor; the precursor obtained above was transferred to a heating furnace, and heat-treated in an air atmosphere, the heat treatment temperature was 300°C, and the reaction time was 3 hours. When the reaction time expires, Get LiMgVO after natural cooling 4 -Salt mixed powder; the LiMgVO obtained above 4 -Salt mixed powder is washed with deionized water several times to remove molten salt, filtered and dried at 100℃ for 3h to obtain rod-shaped LiMgVO 4 material.
[0032] Comp...
Example Embodiment
[0033] Example 2:
[0034] The difference between this embodiment and embodiment 1 is only that the heat treatment temperature is 300°C and 400°C, and the specific implementation process is as follows:
[0035] In molar ratio (LiOH·H 2 O:MgO:NH 4 VO 3 =1:1:1), respectively weigh 0.316g of lithium hydroxide, 0.276g of magnesium oxide and 0.800g of ammonium metavanadate as raw materials, and grind the raw materials for 15min to mix uniformly; another weighed 1.454g Of sodium nitrate and 1.729g of potassium nitrate, grind for 15 minutes to make them evenly mixed, as the mixed molten salt (NaNO 3 -KNO 3 ). The molten salt and the raw material were mixed and ground for 2 minutes to obtain a precursor; the precursor obtained above was transferred to a heating furnace, and the heat treatment was performed in an air atmosphere. The heat treatment temperature was 300°C and 400°C, and the reaction time was 3 hours. When the time expires, LiMgVO will be obtained after natural cooling 4 -Salt...
Example Embodiment
[0037] Example 3:
[0038] The difference between this embodiment and embodiment 1 is only: the reaction time is 1h, 3h and 5h respectively, and the specific implementation process is as follows:
[0039] In molar ratio (LiOH·H 2 O:MgO:NH 4 VO 3 =1:1:1), respectively weigh 0.316g of lithium hydroxide, 0.276g of magnesium oxide and 0.800g of ammonium metavanadate as raw materials, and grind the raw materials for 15min to mix uniformly; another weighed 1.454g Of sodium nitrate and 1.729g of potassium nitrate, grind for 15 minutes to make them evenly mixed, as the mixed molten salt (NaNO 3 -KNO 3 ). The molten salt and the raw material were mixed and ground for 2 minutes to obtain a precursor; the precursor obtained above was transferred to a heating furnace, and heat-treated in an air atmosphere. The heat treatment temperature was 300℃, and the reaction time was 1h, 3h and 5h. When the reaction time expires, LiMgVO will be obtained after natural cooling 4 -Salt mixed powder; the LiM...
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