Method of preparing nickel cobaltite/carbon nanotube composite materials
A carbon nanotube, composite material technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of long reaction time, increase material internal resistance, high energy consumption, and achieve good electrical Chemical stability, high specific capacitance value, environmentally friendly effect
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specific Embodiment approach 1
[0014] Specific embodiment one: a kind of preparation method of nickel cobaltate / carbon nanotube composite nano-magnetic material is specifically finished according to the following steps: 1.5mmolNi(NO 3 ) 2 ·6H 2 O and 3mmolCo(NO 3 ) 2 ·6H 2 O was dissolved in 20ml of diethylene glycol, stirred at 80°C until the solution was prepared to contain Ni 2+ / Co 2+ Mixed metal solution A with a molar ratio of 1:2; dissolve 9mmol NaOH and 30mg carbon nanotubes in 40ml diethylene glycol, and ultrasonically disperse at 80°C for 30min to form solution B; add solution B dropwise to solution A A mixed solution was obtained; the mixed solution was fully stirred evenly at 80°C, moved into a reaction kettle, and replaced with CO 2 , after replacement the CO 2 The pressure is increased to 10MPa; put the reactor into an oil bath, set the stirring rate to 400r / min, the temperature to 200°C, and the reaction time to be 8h; the resulting product is washed with ethanol and distilled water un...
specific Embodiment approach 2
[0015] Specific embodiment two: a kind of preparation method of nickel cobaltate / carbon nanotube composite nano-magnetic material is specifically finished according to the following steps: 1.5mmolNi(NO 3 ) 2 ·6H 2 O and 3mmolCo(NO 3 ) 2 ·6H 2 O was dissolved in 10ml of diethylene glycol, stirred at 80°C until the solution was prepared to contain Ni 2+ / Co 2+ Mixed metal solution A with a molar ratio of 1:2; dissolve 7mmol NaOH and 30mg carbon nanotubes in 20ml diethylene glycol, and disperse ultrasonically at 80°C for 30min to form solution B; add solution B dropwise to solution A A mixed solution was obtained; the mixed solution was fully stirred evenly at 80°C, moved into a reaction kettle, and replaced with CO 2 , after replacement the CO 2 The pressure is increased to 10MPa; put the reactor into an oil bath, set the stirring rate to 400r / min, the temperature to 200°C, and the reaction time to be 8h; the resulting product is washed with ethanol and distilled water un...
specific Embodiment approach 3
[0016]Specific embodiment three: a kind of preparation method of nickel cobaltate / carbon nanotube composite nano-magnetic material, specifically finish according to the following steps: 1.5mmolNi(NO 3 ) 2 ·6H 2 O and 3mmolCo(NO 3 ) 2 ·6H 2 O was dissolved in 20ml of diethylene glycol, stirred at 80°C until the solution was prepared to contain Ni 2+ / Co 2+ Mixed metal solution A with a molar ratio of 1:2; 9mmol NaOH and 60mg carbon nanotubes were dissolved in 40ml diethylene glycol, and ultrasonically dispersed at 80°C for 30min to form solution B; the solution B was added dropwise to solution A A mixed solution was obtained; the mixed solution was fully stirred evenly at 80°C, moved into a reaction kettle, and replaced with CO 2 , after replacement the CO 2 The pressure is increased to 10MPa; put the reactor into an oil bath, set the stirring rate to 400r / min, the temperature to 200°C, and the reaction time to be 8h; the resulting product is washed with ethanol and dist...
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