Preparation method of Co-Mn alloy oxide-sulfur and nitrogen co-doped graphene nanometer composite material
A nano-composite material and graphene technology, which is applied in the field of preparation of cobalt-manganese alloy oxide-sulfur and nitrogen co-doped graphene nano-composite materials, can solve the problems of complex process and high cost, and achieve good rate performance, stable performance, The effect of good cycle stability
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Embodiment 1
[0027] Take graphite oxide powder, thioglycolic acid, sodium dodecylbenzene sulfonate, and hexamethylenetetramine (mass ratio 1:1:0.5:2) in 50ml deionized water and ultrasonically disperse for 0.5h at room temperature, then in the reactor Reaction at 60°C for 5h, suction filtration and drying (60°C, 12h) to obtain sulfur and nitrogen initially doped graphene. Sulfur-nitrogen-doped graphene and melamine were mixed in a mass ratio of 1:2, and reacted at 400°C for 2h in a tube furnace with nitrogen to obtain sulfur-nitrogen co-doped graphene (S,N-graphene). Take the cobalt manganese salt mixture (Co(NO 3 ) 2 , MnSO 4 Mass ratio 1:1) Dissolve 3g of 0.01mol, S, N-graphene in 50ml of deionized water, mix and stir evenly, then add 10g of ammonia, the mixed solution is reacted in a hydrothermal reactor at 200℃ for 2h and then filtered by suction After drying, the final product cobalt-manganese alloy oxide nanosheets / sulfur and nitrogen co-doped graphene nanocomposite material is obtain...
Embodiment 2
[0029] Take graphite oxide powder, 2-mercaptoethanol, sodium lauryl sulfate, and ammonia (mass ratio 1:5:2:10) at room temperature and disperse ultrasonically in 50ml deionized water for 2h, then react at 100℃ for 10h in the reactor, and then pump After filtering and drying (80℃, 12h), the sulfur and nitrogen preliminary doped graphene was obtained. Sulfur-nitrogen-doped graphene and hexamethylenetetramine were mixed at a mass ratio of 1:5, and reacted at 300°C for 5h in a tube furnace filled with nitrogen to obtain sulfur-nitrogen co-doped graphene (S, N-graphite) Ene). Take the cobalt manganese salt mixture (CoSO 4 , MnCl 2 Mass ratio 1:1 mixing) 5g of 0.05mol, S, N-graphene dissolved in 80ml of deionized water, mixed and stirred uniformly, then added 16g of ammonia, the mixed solution was reacted in a hydrothermal reactor at 230℃ for 5h and then filtered by suction After drying, the final product cobalt-manganese alloy oxide nanosheets / sulfur and nitrogen co-doped graphene ...
Embodiment 3
[0031] Take graphite oxide powder, 2-mercaptoethanol, sodium dodecyl sulfonate, and melamine (mass ratio 1:8:5:15) in 50ml deionized water to ultrasonically disperse for 5h at room temperature, then react at 200℃ for 24h, After suction filtration and drying (60℃, 12h), the sulfur and nitrogen initially doped graphene was obtained. Sulfur-nitrogen co-doped graphene (S, N-graphene) was mixed with urea at a mass ratio of 1:15 and reacted at 500° C. for 10 hours in a tube furnace with nitrogen. Take the cobalt manganese salt mixture (CoCl 2 , MnC 2 O 4 Mass ratio 1:1 mixing) 0.02mol, S, N-graphene 2g dissolved in 80ml deionized water, mixed and stirred evenly, then add 20g ammonia water, the mixed solution was reacted in a hydrothermal reactor at 250℃ for 3h and then filtered by suction After drying, the final product cobalt-manganese alloy oxide nanosheets / sulfur and nitrogen co-doped graphene nanocomposite material is obtained.
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