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Hollow hexahydric annular hydroxyl cobaltous oxide nano material and preparation method thereof

A technology of cobalt oxyhydroxide and nanomaterials, which is applied in the field of inorganic materials, can solve the problems of complex preparation process and huge equipment, and achieve the effects of simple process flow, low process energy consumption and easy mass production

Active Publication Date: 2017-12-08
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the preparation process of this method is complicated, and the required equipment is huge (oxidation kettle)
In summary, there is no report on the hollow six-membered ring cobalt oxyhydroxide nanomaterial and its preparation method

Method used

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  • Hollow hexahydric annular hydroxyl cobaltous oxide nano material and preparation method thereof
  • Hollow hexahydric annular hydroxyl cobaltous oxide nano material and preparation method thereof
  • Hollow hexahydric annular hydroxyl cobaltous oxide nano material and preparation method thereof

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Embodiment 1

[0022] (1) Prepare 50 mL of cobalt chloride aqueous solution with a concentration of 0.1 mol / L and 50 mL of 1.0 mol / L sodium hydroxide aqueous solution; In the three-necked flask, nitrogen gas was passed into the three-necked flask in advance, and the reaction was carried out at 50°C and stirred for 30 minutes; (3) Remove the N 2 , adding 10ml of hydrogen peroxide with a mass fraction of 28%, and aging for 30min; (4) after the aging, the resulting suspension was filtered, washed, and dried to prepare a hollow six-membered ring cobalt oxyhydroxide, its TEM photo and XRD See the attached spectrograms respectively figure 1 And attached figure 2 . It can be seen that the length of the six sides of the obtained sample is 80-100 nm, the longitudinal thickness is 10-15 nm, and the wall thickness is 20-25 nm.

Embodiment 2

[0024] (1) Configure 50 mL of cobalt chloride aqueous solution with a concentration of 0.1 mol / L and 50 mL of 0.3 mol / L sodium hydroxide aqueous solution; In the three-necked flask, nitrogen gas was passed into the three-necked flask in advance, and the reaction was carried out at 50°C and stirred for 30 minutes; (3) Remove the N 2 , add 10ml of hydrogen peroxide with a mass fraction of 28%, and age for 30min; (4) after the aging, the resulting suspension is filtered, washed, and dried to prepare a hollow six-membered ring cobalt oxyhydroxide, and its TEM photo is shown in the attached image 3 . It can be seen that the lengths of the six sides of the obtained sample are all 100-120 nm, the longitudinal thickness is 10-15 nm, and the wall thickness is 20-25 nm.

Embodiment 3

[0026] (1) Prepare 50 mL of cobalt chloride aqueous solution with a concentration of 0.1 mol / L and 50 mL of 1.0 mol / L sodium hydroxide aqueous solution; In the three-necked flask, nitrogen gas was passed into the three-necked flask in advance, and the reaction was carried out at 50°C and stirred for 30 minutes; (3) Remove the N 2 , add 10ml of hydrogen peroxide with a mass fraction of 28%, and age for 2h; (4) after aging, the resulting suspension is filtered, washed, and dried to prepare a hollow six-membered ring cobalt oxyhydroxide, and the six sides of the obtained sample The length of each is 120-150nm, the longitudinal thickness is 15-20nm, and the wall thickness is 25-30nm.

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Abstract

The invention relates to a hollow hexahydric annular hydroxyl cobaltous oxide nano material and a preparation method thereof, and belongs to the field of inorganic materials. The lengths of six sides of hollow hexahydric annular hydroxyl cobaltous oxide are all 50-150nm; the longitudinal thicknesses of the six sides are 10-20nm; the wall thicknesses of the six sides are 20-30nm. The preparation method comprises the following specific steps: (1) combining a cobalt solution and a strong base solution, dropping into a three-neck flask, and performing a reaction for a certain time in the presence of an inert gas under a stirring condition; (2) removing a protection gas, adding a certain amount of a strong oxidant, and continuously aging; (3) after aging is completed, filtering the obtained turbid liquid, washing, and drying, thereby obtaining the hollow hexahydric annular hydroxyl cobaltous oxide nano material. The hollow hexahydric annular hydroxyl cobaltous oxide nano material has the advantages of being simple in process procedure, gentle in reaction condition, easy in large-scale preparation and the like, is narrow in product granularity distribution, controllable in morphology and good in repeatability, and has the potential of being applied to fields such as supercapacitors, lithium ion batteries and catalysts.

Description

technical field [0001] The invention belongs to the field of inorganic materials, and in particular relates to a hollow six-membered ring cobalt oxyhydroxide nanometer material and a preparation method thereof. technical background [0002] With the rapid development of my country's economy and society, the energy situation and environmental problems are becoming increasingly severe. Lithium-ion batteries are widely used in portable electronic devices such as laptops, mobile phones, and cameras because of their low energy consumption, high specific capacity and specific energy, high operating voltage, long cycle life, low self-discharge, and environmental friendliness. In recent years, due to the vigorous development of electric vehicles, lithium-ion batteries as the power source of electric vehicles have received more attention and research. Generally, the performance of lithium-ion batteries mainly depends on the electrode materials and electrolyte materials that make up ...

Claims

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Application Information

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IPC IPC(8): C01G51/04B82Y40/00
CPCC01G51/04C01P2002/72C01P2004/04C01P2004/22
Inventor 陈光文陈会会杨梅陶莎任明月
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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