Method for synthesizing ZIF-8-based ternary composite ZnO/ZnCo2O4/NiO by solvothermal process and application of method
A ZIF-8, ternary composite technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of easy collapse of structure and limited shape, and achieve the effect of small degree of separation, good shape and excellent electrochemical performance.
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[0024] Example 1
[0025] Disperse 290 mg of ZIF-8 in 60 mL of ethanol containing 2 mmol of cobalt nitrate and 421 mg of cyclohexamethylene tetramine. After stirring to dissolve it completely, the solution was transferred to a 100 mL reactor and kept in an oven at 120°C for 2 hours. The reaction kettle was taken out of the oven, and when it was cooled to room temperature, it was collected by centrifugation and dried at 60°C for 12 hours to obtain a precursor. Then in the air of 350 ℃ at 2 ℃ min -1 The precursor is annealed at a rate of 2h to obtain a binary composite ZnO / ZnCo based on ZIF-8 2 O 4 .
[0026] Disperse 290 mg of ZIF-8 in 60 mL of ethanol containing 2 mmol of nickel nitrate and 421 mg of cyclohexamethylene tetramine. After stirring to dissolve it completely, the solution was transferred to a 100 mL reactor and kept in an oven at 120°C for 2 hours. The reaction kettle was taken out of the oven, and when it was cooled to room temperature, it was collected by centrifugat...
Example Embodiment
[0031] Example 2
[0032] Disperse 290 mg of ZIF-8 in 60 mL of ethanol containing 2 mmol of cobalt nitrate and 421 mg of cyclohexamethylene tetramine. After stirring to dissolve it completely, the solution was transferred to a 100 mL reactor and kept in an oven at 120°C for 2 hours. The reaction kettle was taken out of the oven, and when it was cooled to room temperature, it was collected by centrifugation and dried at 60°C for 12 hours to obtain a precursor. Then in the air of 350 ℃ at 2 ℃ min -1 The precursor is annealed at a rate of 2h to obtain a binary composite ZnO / ZnCo based on ZIF-8 2 O 4 .
[0033] Disperse 290 mg of ZIF-8 in 60 mL of ethanol containing 2 mmol of nickel nitrate and 421 mg of cyclohexamethylene tetramine. After stirring to completely dissolve the solution, transfer the solution to a 100 mL reactor and keep it in an oven at 120°C for 2 hours. The reaction kettle was taken out of the oven, and when it was cooled to room temperature, it was collected by centr...
Example Embodiment
[0035] Example 3
[0036] Disperse 290 mg of ZIF-8 in 60 mL of ethanol containing 2 mmol of cobalt nitrate and 421 mg of cyclohexamethylene tetramine. After stirring to dissolve it completely, the solution was transferred to a 100 mL reactor and kept in an oven at 120°C for 2 hours. The reaction kettle was taken out of the oven, and when it was cooled to room temperature, it was collected by centrifugation and dried at 60°C for 12 hours to obtain a precursor. Then in the air of 350 ℃ at 2 ℃ min -1 The precursor is annealed at a rate of 2h to obtain a binary composite ZnO / ZnCo based on ZIF-8 2 O 4 .
[0037] Disperse 290 mg of ZIF-8 in 60 mL of ethanol containing 2 mmol of nickel nitrate and 421 mg of cyclohexamethylene tetramine. After stirring to completely dissolve the solution, transfer the solution to a 100 mL reactor and keep it in an oven at 120°C for 2 hours. The reaction kettle was taken out of the oven, and when it was cooled to room temperature, it was collected by centr...
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