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CoO/Co/C ternary composite material and preparation method and application thereof

A composite material and reaction technology, applied to electrical components, battery electrodes, circuits, etc., can solve the problems of unfavorable popularization and application, long time consumption, high preparation cost, etc., and achieve the effect of cheap raw materials, simplified preparation process, and simple preparation process

Inactive Publication Date: 2017-07-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of CoO / Co nanostructures reported in many literatures requires the addition of a large number of different synthetic raw materials, which involves high preparation costs and time-consuming, which is not conducive to popularization and application.

Method used

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  • CoO/Co/C ternary composite material and preparation method and application thereof
  • CoO/Co/C ternary composite material and preparation method and application thereof
  • CoO/Co/C ternary composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of CoO / Co / C ternary composite material, its preparation method comprises the steps:

[0038] 1) Weigh 21.4g of oleylamine in a three-necked flask, add 0.572g of cobalt acetylacetonate into oleylamine, and continue to stir under the smart magnetic stirring heating pot to obtain dark green mixed liquid I, and then pass in inert gas N 2 , heated to 135°C and kept for 90 minutes to obtain the red mixed solution II (Co-oleylamine composite system);

[0039] 2) Continue the heating reaction of the obtained red mixed solution II under stirring conditions, and keep it at 200°C for 60 minutes to obtain the mixed solution III of CoO particles and oleylamine;

[0040] 3) The mixture III obtained in step 2) was placed in a tube furnace and heated to 800° C. for 2 h under a protective atmosphere to obtain a CoO / Co / C ternary composite material.

[0041] The CoO particles obtained in step 2) of this example (after being separated from oleylamine and washed) and the final produ...

Embodiment 2

[0045] A kind of CoO / Co / C ternary composite material, its preparation method comprises the steps:

[0046] 1) Weigh 21.4g of oleylamine in a three-necked flask, add 0.572g of cobalt acetylacetonate into oleylamine, and continue to stir under the smart magnetic stirring heating pot to obtain dark green mixed liquid I, and then pass in inert gas N 2 , heated to 135°C and kept for 90 minutes to obtain the red mixed solution II (Co-oleylamine composite system);

[0047] 2) Continue the heating reaction of the obtained red mixed solution II under stirring conditions, and keep it at 200°C for 60 minutes to obtain the mixed solution III of CoO particles and oleylamine;

[0048] 3) The mixture III obtained in step 2) was placed in a tube furnace and heated to 400° C. for 2 h under a protective atmosphere to be calcined to obtain a CoO / Co / C ternary composite material.

[0049] The ORR catalytic performance of the product obtained in this example shows that the obtained CoO / Co / C ternar...

Embodiment 3

[0051] A kind of CoO / Co / C ternary composite material, its preparation method comprises the steps:

[0052] 1) Weigh 21.4g of oleylamine in a three-necked flask, add 0.572g of cobalt acetylacetonate into oleylamine, and continue to stir under the smart magnetic stirring heating pot to obtain dark green mixed liquid I, and then pass in inert gas N 2 , heated to 135°C and kept for 30 minutes to obtain the red mixed solution II (Co-oleylamine composite system);

[0053] 2) Continue the heating reaction of the obtained red mixed solution II under stirring conditions, and keep it at 200°C for 60 minutes to obtain the mixed solution III of CoO particles and oleylamine;

[0054] 3) The mixture III obtained in step 2) was placed in a tube furnace and heated to 600° C. for 2 h under a protective atmosphere to obtain a CoO / Co / C ternary composite material.

[0055] The ORR catalytic performance of the product obtained in this example shows that the obtained CoO / Co / C ternary composite cat...

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Abstract

The invention discloses a CoO / Co / C ternary composite material. A preparation method thereof comprises the following steps: taking oleylamine and cobalt acetylacetonate as main raw materials, heating under a protective atmosphere after uniformly mixing the two raw materials for reaction; continuously warming an obtained product, carrying out a second heat preservation reaction to obtain a mixed liquor of CoO particles and oleylamine, and then directly roasting the obtained mixed liquor under the protective atmosphere so as to obtain the CoO / Co / C ternary composite material. The referred raw materials are cheap and easy to get, and poisonous and harmful organic surface active agents and additives do not need to be used additionally, so that the composite material is safe and environmentally-friendly; the preparation technology is simple and environmentally-friendly, the reaction conditions are mild, the preparation technology can be effectively simplified, and the cost is reduced; and the obtained CoO / Co / C ternary composite material is applied to oxygen reduction reactions, and can be excellent in electro-catalytic property.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a CoO / Co / C ternary composite material and its preparation method and application. Background technique [0002] Oxygen reduction reaction (ORR) has become one of the focal points in electrochemistry over the past few decades due to its importance in many renewable energy applications such as fuel cells, lithium-air batteries, etc. one. Currently, since the slow kinetics of ORR and the high cost of platinum-based catalysts are the main obstacles to the commercialization of these renewable energy sources, it is urgent to study non-platinum catalysts. [0003] A large number of studies have shown that transition metal oxide-supported carbon materials are one of the most potential ORR catalysts to replace Pt and Pt-based catalysts. However, 3d electron transition metal oxides such as Mn, Co, Ni, and Fe are low in cost, abundant in reserves, easy to prepare, ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/90H01M4/88
CPCH01M4/8647H01M4/88H01M4/9016H01M4/9041H01M4/9083Y02E60/50
Inventor 王洪恩佘法爽蔡祎
Owner WUHAN UNIV OF TECH