A kind of preparation method of orientation flaky snse powder
A flake and powder technology, which is applied in the field of preparation of oriented flake SnSe powder, can solve the problems of high cost, low thermoelectric performance of polycrystalline materials, and difficult control of single crystal preparation process, and achieves a simple and easy preparation method. The effect of industrialization promotion
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Embodiment 1
[0030] The preparation method of oriented flaky SnSe powder comprises the steps:
[0031] (1) Weigh 0.1579g of Se powder and 4g of NaOH respectively, put them into the autoclave in turn, and add an appropriate amount of distilled water so that the filling degree of the autoclave is 70%.
[0032] (2) Put the reaction kettle into an electric heating constant temperature drying oven at 140° C. for 1 hour, and take out the reaction kettle cooled to room temperature with the oven.
[0033] (3) Weigh 0.4514g SnCl respectively 2 2H 2 O and 4g NaBH 4 , added to the reactor in turn.
[0034] (4) Put the reaction kettle into an electric heating constant temperature drying oven at 100° C. for 15 hours. After the reaction kettle was cooled to room temperature with the oven, it was taken out.
[0035] (5) The reaction solution is continuously rinsed and filtered with distilled water until the solution is neutral. The reactant was dried under vacuum at 80° C. for 6 hours and collected...
Embodiment 2
[0040] (1) Weigh 0.1579g of Se powder and 4g of NaOH respectively, put them into the autoclave in turn, and add an appropriate amount of distilled water so that the filling degree of the autoclave is 70%.
[0041] (2) Put the reaction kettle into an electric heating constant temperature drying oven at 140° C. for 1 hour, and take out the reaction kettle cooled to room temperature with the oven.
[0042] (3) Weigh 0.4538g SnCl respectively 2 2H 2 O and 5g NaBH 4 , added to the reactor in turn.
[0043] (4) Put the reaction kettle into an electric heating constant temperature drying oven at 120° C. for 15 hours. Take out the reaction kettle after cooling to room temperature.
[0044] (5) The reaction solution is continuously rinsed and filtered with distilled water until the solution is neutral. The reactant was dried under vacuum at 80° C. for 6 hours and collected.
[0045] The flaky SnSe powder obtained by this method is an orthorhombic SnSe pure phase, which has been ...
Embodiment 3
[0049] (1) Weigh 0.1579g of Se powder and 4g of NaOH respectively, put them into the autoclave in turn, and add an appropriate amount of distilled water so that the filling degree of the autoclave is 60%.
[0050] (2) Put the reaction kettle into an electric heating constant temperature drying oven at 160° C. for 1 hour, and take out the reaction kettle cooled to room temperature with the oven.
[0051] (3) Weigh 0.4526g SnCl respectively 2 2H 2 O and 5g NaBH 4 , added to the reactor in turn.
[0052](4) Put the reaction kettle into an electric heating constant temperature drying oven at 140° C. for 1 hour. Take out the reaction kettle after cooling to room temperature.
[0053] (5) The reaction solution is continuously rinsed and filtered with distilled water until the solution is neutral. The reactant was dried under vacuum at 90°C for 5 hours and collected.
[0054] The flaky SnSe powder obtained by this method is an orthorhombic SnSe pure phase, which has been imag...
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