A kind of preparation method of three-dimensional macroporous structure spinel cobalt manganese binary oxide
A technology of binary oxides and three-dimensional macropores, applied in cobalt compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of inconvenient mass production and low output, and achieve low cost, high specific surface area, and large excellent space The effect of the hole structure
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[0019]The method of preparing a spatial 3-dimensional mantle structure prepared by the process of the present invention includes the following steps:
[0020](1) Slowly warm the low carbonol solvent to 30 to 60 ° C, the mass is 0.5% to 2% of the mixed acetate of the solvent mass, and the warmth is added to the warm alcohol, which is vigorously stirred to cobalt acetate and manganese acetate. Dissolve, gave a pink solution, continued constant temperature agitation for 3 to 6 hours, slowly cooling to room temperature, aging 24 to 48 hours, resulting in suspension;
[0021](2) The suspension of the above step (1) is separated, and the precursor is washed three times using the same solvent as the above step (1), and the residual cobalt cobalt and manganese acetate is removed, and the dry 12 to 24 is placed in an 80 degree oven. Hour, get a pink organic salt precursor, solvent recovery and reuse;
[0022](3) Grinding the dry precursor after the drying of the above step (2), an over 300 mesh scree...
Embodiment 1
[0027](1) Preparation of an organic cobalt salt precursor: 100 g of ethanol is slowly preheated to 40 ° C, and 1 g of mixed acetate (mixture is Co (AC)2· 4h2O and Mn (AC)2· 4h2O, there is a molar ratio of cobalt and manganese to 2: 1) in warm alcohol, which is vigorously stirred vigorously to cobalt acetate and manganese acetate, resulting in a pink solution. After the constant temperature was vigorously stirred for 3 hours, slowly cool to room temperature, aging 36 hours. The suspension was separated, and the precursor was washed three times with ethanol, and the residual acetate, manganese acetate was removed, and dried in a 80 degree oven for 24 hours to give a pink organic salt precursor. Solvent can be recovered;
[0028](2) The precursor is fine, and the 300 mesh sieve is over. With a temperature increase rate of 0.5 ° C / min, the temperature was raised to 270 ° C, calcined for 9 hours, and cooled to room temperature, and a spatial cobalt-manganese binary oxide positive electrod...
Embodiment 2
[0030](1) Preparation of an organic cobalt salt precursor: 100 g of ethanol is slowly preheated to 40 ° C, and 1 g of mixed acetate (mixture is Co (AC)2· 4h2O and Mn (AC)2· 4h2O, in which the molar ratio of cobalt and manganese is 3: 1) in a warm alcohol, stirred vigorously to cobalt acetate and manganese acetate is all dissolved to give a pink solution. After the constant temperature was vigorously stirred for 3 hours, slowly cool to room temperature, aging 26 hours. The suspension was separated, and the precursor was washed three times with ethanol, and the residual acetate, manganese acetate was removed, and dried in a 80 degree oven for 24 hours to give a pink organic salt precursor. Solvent can be recovered;
[0031](2) The precursor is fine, and the 300 mesh sieve is over. With a temperature rise rate of 0.5 ° C / min, it was raised to 270 ° C in the air, calcined for 9 hours, cooled to room temperature, and obtained a spatial 3-dimensional pore structure having a spatial three-d...
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