Method for preparing Mn2O3 porous micro-nano structure material having controllable morphology
A micro-nano structure and morphology technology, applied in manganese oxide/manganese hydroxide, structural parts, secondary batteries, etc., can solve the problem of rare reports of manganese trioxide anode materials, difficulties in the insertion and extraction of sodium ions, and influence on materials. performance and other issues, to achieve the effect of improving electrochemical performance, maintaining structural integrity, and improving reactivity
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[0034] Example 1
[0035] A kind of Mn 2 O 3 The preparation method of the porous micro-nano structure material includes the following steps:
[0036] 1) Add 0.735g of manganese acetate tetrahydrate to 50mL of deionized water and stir to obtain solution A;
[0037] 2) Add 1.1 g of ammonium bicarbonate to 50 mL of deionized water and stir to obtain solution B;
[0038] 3) Under stirring conditions, add solution A to solution B dropwise (the addition rate of manganese acetate solution is 0.1mL / s), stir and react for 30 minutes to produce a white precipitate, and then perform suction filtration and place in a 40℃ oven Dry to obtain manganese carbonate;
[0039] 4) The manganese carbonate obtained in step 3) is calcined in an air atmosphere to obtain Mn 2 O 3 Porous micro-nano structure material (porous manganese trioxide), in which the calcination treatment system is: heating up to 500°C at a rate of 3°C / min for 4 hours.
[0040] The manganese carbonate obtained in this example was subject...
Example Embodiment
[0041] Example 2
[0042] A kind of Mn 2 O 3 The preparation method of the porous micro-nano structure material includes the following steps:
[0043] 1) Add 0.735g of manganese acetate tetrahydrate to 100mL of deionized water and stir to obtain solution A;
[0044] 2) Add 0.6g of ammonium bicarbonate to 100mL of deionized water and stir to obtain solution B;
[0045] 3) Under stirring conditions, add solution A to solution B dropwise (the addition rate of manganese acetate solution is 3.3mL / s), stir and react for 30 minutes to produce a white precipitate, then perform suction filtration and place in a 50℃ oven Dry to obtain manganese carbonate;
[0046] 4) The manganese carbonate obtained in step 3) is calcined in an air atmosphere to obtain Mn 2 O 3 Porous micro-nano structure material (porous manganese trioxide), in which the calcination treatment system is: heating up to 500°C at a rate of 3°C / min for 4 hours.
[0047] The morphology of the manganese carbonate obtained in this examp...
Example Embodiment
[0048] Example 3
[0049] A kind of Mn 2 O 3 The preparation method of the porous micro-nano structure material includes the following steps:
[0050] 1) Add 0.735g of manganese acetate tetrahydrate to 400mL of deionized water, stir evenly to obtain solution A;
[0051] 2) Add 1.1 g of ammonium bicarbonate to 400 mL of deionized water and stir to obtain solution B;
[0052] 3) Under stirring conditions, quickly add solution A to solution B (the manganese acetate solution is added at a rate of 100 mL / s), and then stir for 5 minutes to produce a white precipitate, and then perform suction filtration and dry in an oven at 60°C. Manganese carbonate
[0053] 4) The manganese carbonate obtained in step 3) is calcined in an air atmosphere to obtain Mn 2 O 3 Porous micro-nano structure material (porous manganese trioxide), in which the calcination treatment system is: heating up to 550°C at a rate of 3°C / min for 3 hours.
[0054] The morphology of the manganese carbonate obtained in this exampl...
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