Hollow micro-sphere possessing multilayer cobaltous sulfide/cobaltous oxide shell and preparation method and application thereof

A technology of microspheres and cobalt oxide, which is applied in the preparation of microspheres, microcapsule preparations, and hybrid/electric double-layer capacitor manufacturing. low effect

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above examples, the multilayer hollow structure materials are all metal oxides. It is relatively easy to synthesize the metal oxide multilayer structure by the template method, but it is very difficult to synthesize the cobalt sulfide multilayer hollow structure by the template method.

Method used

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  • Hollow micro-sphere possessing multilayer cobaltous sulfide/cobaltous oxide shell and preparation method and application thereof
  • Hollow micro-sphere possessing multilayer cobaltous sulfide/cobaltous oxide shell and preparation method and application thereof
  • Hollow micro-sphere possessing multilayer cobaltous sulfide/cobaltous oxide shell and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] 50 mg of carbon spheres with a diameter of 1 μm were ultrasonically dispersed in a mixed solution of 100 ml of water and ethanol (volume ratio 1:1), and 0.2 g of Co(NO 3 ) 2 ﹒ 6H 2 O and 1g CO(NH 2 ) 2 Mixed evenly, the mixed solution was stirred at 80°C for 12h, the obtained product was centrifuged and washed with deionized water and ethanol, and then dried in a constant temperature oven at 60°C for 12h. The obtained powder was heat-treated in air at 500°C for 2h, and the heating rate was 3°C / min. Income Co 3 o 4 The hollow spheres are mixed with sulfur powder (Co / S molar ratio is 1:1), transferred to a tube furnace, and roasted at 400°C for 4 hours in an argon atmosphere to obtain Co 9 S 8 / CoO hollow spheres with multilayer core-shell structure. Adopt Japanese science D / max-2500 type X-ray diffraction analyzer to analyze gained sample, obtained result is as follows figure 1 shown. The morphology and particle size of the sample were observed with a Nova Nan...

Embodiment 2

[0030] 50 mg of carbon spheres with a diameter of 700 nm were ultrasonically dispersed in a mixed solution of 100 ml of water and methanol (volume ratio 1:1), and 0.2 g of Co(NO 3 ) 2 ﹒ 6H 2 O and 1g CO(NH 2 ) 2 Mixed evenly, the mixed solution was stirred at 80°C for 12h, the obtained product was centrifuged and washed with deionized water and ethanol, and then dried in a constant temperature oven at 60°C for 12h. The obtained powder was heat-treated in air at 500°C for 2h, and the heating rate was 3°C / min. Income Co 3 o 4 The hollow spheres were mixed with sulfur powder (Co / S molar ratio was 1:1) and transferred to a tube furnace, and fired at 400°C for 4h in an argon atmosphere.

Embodiment 3

[0032] 50 mg of carbon spheres with a diameter of 700 nm were ultrasonically dispersed in a mixed solution of 100 ml of water and ethanol (volume ratio 1:1), and 0.5 g of Co(NO 3 ) 2 ﹒ 6H 2 O and 1.5g CO(NH 2 ) 2 Mixed evenly, the mixed solution was stirred at 80°C for 6h, the obtained product was centrifuged and washed with deionized water and ethanol, and then dried in a constant temperature oven at 60°C for 12h. The obtained powder was heat-treated in air at 500°C for 2h, and the heating rate was 3°C / min. Income Co 3 o 4 The hollow spheres were mixed with sulfur powder (Co / S molar ratio was 1:3) and transferred to a tube furnace, and fired at 400°C for 4h in an argon atmosphere.

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Abstract

The present invention discloses a hollow micro-sphere possessing a multilayer cobaltous sulfide / cobaltous oxide shell and a preparation method and an application thereof. The preparation method comprises the steps of firstly adopting a low temperature solution precipitation method to grow a Co2CO3(OH)2 nanowire on the surface of a carbon sphere, calcining in the air to obtain the hollow micro-sphere possessing the multilayer Co3O4 shell, and then vulcanizing the Co3O4 micro-sphere in a tube furnace to obtain the complete hollow micro-sphere possessing the multilayer cobaltous sulfide / cobaltous oxide shell. According to the present invention, the obtained powder is good in dispersity and uniform in size and has the controllable particle size, the reaction repeatability is high, and the preparation cost is low.

Description

technical field [0001] The invention relates to a hollow microsphere electrode material with a multilayer cobalt sulfide / cobalt oxide shell, its preparation and its application in supercapacitors. Background technique [0002] In recent years, cobalt sulfide, as an excellent energy material, has received great attention and can be widely used in supercapacitors, lithium-ion batteries, solar cells and other fields. Studies have shown that the physical and chemical properties of materials are closely related to the structure and size of materials. Therefore, researchers have focused on the synthesis of cobalt sulfides with certain morphology, size and dimensionality. [0003] Hollow structures, especially multilayer hollow structures, have received great attention. The traditional preparation methods for synthesizing multilayer hollow structures include template method and self-assembly method. Among these methods, the template method is considered to be an effective method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86B01J13/02
CPCY02E60/13H01G11/24B01J13/02H01G11/30H01G11/46H01G11/86
Inventor 潘安强王亚平梁叔全唐艳
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