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A hollow six-membered ring cobalt oxyhydroxide nanomaterial and its preparation method

A cobalt oxyhydroxide and nanomaterial technology, 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 narrow particle size distribution

Active Publication Date: 2021-11-02
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

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  • A hollow six-membered ring cobalt oxyhydroxide nanomaterial and its preparation method
  • A hollow six-membered ring cobalt oxyhydroxide nanomaterial and its preparation method
  • A hollow six-membered ring cobalt oxyhydroxide nanomaterial and its preparation method

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Embodiment 1

[0023] (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 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

[0025] (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

[0027] (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 six-membered ring cobalt oxyhydroxide nanometer material and a preparation method thereof, belonging to the field of inorganic materials. The length of the six sides of the hollow six-membered ring cobalt oxyhydroxide is 50-150nm, the longitudinal thickness is 10-20nm, and the wall thickness is 20-30nm. The specific process of its preparation method is as follows: (1) cobalt salt solution and strong Alkaline aqueous solution is dripped into a three-necked flask, and reacted for a certain period of time under inert atmosphere and stirring conditions; (2) Remove the protective gas, add a certain amount of strong oxidant, and continue to age; (3) After aging, the resulting suspension The liquid is filtered, washed and dried to obtain a hollow six-membered ring cobalt oxyhydroxide nanomaterial. The invention has the advantages of simple process flow, mild reaction conditions, and easy large-scale preparation. The obtained product has narrow particle size distribution, controllable shape, and good reproducibility, and is expected to be applied in the fields of supercapacitors, lithium-ion batteries, and catalysis.

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. [0002] technical background [0003] 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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