A kind of hexagonal sheet mesoporous nickel oxide and its preparation method and application
A technology of hexagonal flakes and nickel oxide, applied in the direction of nickel oxide/nickel hydroxide, etc., can solve the problems of high energy consumption and cumbersome experimental process, and achieve the effects of improving lithium battery performance, promoting diffusion, and simple operation
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Embodiment 1
[0035] Put a 100mL beaker on a magnetic stirrer, add 35mL of distilled water and raise the temperature to 30°C, add 0.15g of CTAB to the distilled water under stirring, after the solution is stirred overnight and becomes transparent, add 0.17g of DDAB, and continue stirring until completely dissolved . Then add 0.70mL of ammonia water with a volume ratio of 25%. After stirring and reacting for 2.5h, slowly add 3.0g Ni(NO 3 ) 2 ·6H 2 O, after sealing, continue to stir and react at 30° C. for 24 h to obtain a light green solution. The obtained light green solution was transferred to a 100mL reactor, and placed in a 100°C thermostat for hydrothermal reaction for 12h. After cooling, the light green solution was centrifuged and washed. The washed precipitate was dried at 40° C. for 18 hours, and the dried precipitate was ground and then calcined at 500° C. for 2 hours to obtain nickel oxide powder.
Embodiment 2
[0037] Put a 100mL beaker on a magnetic stirrer, add 35mL of distilled water and raise the temperature to 30°C, add 0.15g of CTAB to the distilled water under stirring, after the solution is stirred overnight and becomes transparent, add 0.17g of DDAB, and continue stirring until completely dissolved . Then add 0.70mL of ammonia water with a volume ratio of 25%. After stirring and reacting for 2.5h, slowly add 3.0g Ni(NO 3 ) 2 ·6H 2 O, after sealing, continue to stir and react at 30° C. for 24 h to obtain a light green solution. The obtained light green solution was transferred to a 100mL reactor, and placed in a 100°C thermostat for hydrothermal reaction for 24h. After cooling, the light green solution was centrifuged and washed. The washed precipitate was dried at 40° C. for 18 hours, and the dried precipitate was ground and then calcined at 500° C. for 2 hours to obtain nickel oxide powder.
[0038] Observation with transmission electron microscope and scanning electro...
Embodiment 3
[0040] Put a 100mL beaker on a magnetic stirrer, add 32mL of distilled water and raise the temperature to 30°C, add 0.13g of CTAB to the distilled water under stirring, after the solution is stirred overnight and becomes transparent, add 0.14g of DDAB, continue to stir until completely dissolved . Then add 0.70mL of ammonia water with a volume ratio of 25%. After stirring and reacting for 2h, slowly add 3.0g Ni(NO 3 ) 2 ·6H 2 O, after sealing, continue to stir and react at 30° C. for 18 h to obtain a light green solution. The obtained light green solution was transferred to a 100 mL reactor, and placed in a thermostat at 110° C. for hydrothermal reaction for 48 h. After cooling, the light green solution was centrifuged and washed. The washed precipitate was dried at 40° C. for 12 hours, and the dried precipitate was ground and then calcined at 500° C. for 3 hours to obtain nickel oxide powder.
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