Co-Mn-Cu compound oxygen reduction catalyst material for high voltage platform and preparation method thereof

A high-voltage, catalyst technology, applied in the direction of circuits, electrical components, battery electrodes, etc., can solve the problems that are difficult to meet the practical application of metal-air batteries, have not been discovered, and the cost is high, so as to improve electrochemical stability, improve catalytic activity, voltage The effect of platform promotion

Inactive Publication Date: 2017-07-25
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no patents on the preparation of Co-Mn-Cu composite oxide catalyst materials by chemical methods or the same patents as this patent exist
[0006] To sum up, traditional noble metal catalysts and emer...

Method used

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  • Co-Mn-Cu compound oxygen reduction catalyst material for high voltage platform and preparation method thereof
  • Co-Mn-Cu compound oxygen reduction catalyst material for high voltage platform and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0020] First, 5.69 g of potassium permanganate was dissolved in deionized water to form solution 1; then 17.9 g of cobalt acetate was dissolved in deionized water and 38.4 g of manganese nitrate solution (mass fraction of 50%) was prepared into mixed solution 2; Mixed solution 2 was slowly added to solution 1 under stirring to form mixed solution 3; 10.10 g of copper nitrate was then dissolved in deionized water and mixed with mixed solution 3 to prepare mixed solution 4; finally, KOH solution was used to make the mixed solution 4. The pH value was adjusted to 10, and it was placed in a constant temperature water bath at 60°C for constant stirring; after 5 times of suction filtration and washing, it was dried in a vacuum oven at 100°C, and then placed in a high-temperature furnace for sintering at 350°C for 4 hours to obtain a high-voltage platform. Co-Mn-Cu composite oxygen reduction catalyst material CMC-1.

Embodiment 2

[0022] First, 8.54 g of potassium permanganate was dissolved in deionized water to form solution 1; 4.48 g of cobalt acetate was dissolved in deionized water and 38.4 g of manganese nitrate solution (mass fraction of 50%) was prepared into mixed solution 2; Mixed solution 2 was slowly added to solution 1 under stirring to form mixed solution 3; 3.37 g of copper nitrate was then dissolved in deionized water and mixed with mixed solution 3 to make mixed solution 4; finally, KOH solution was used to make mixed solution 4. The pH value was adjusted to 11, and it was placed in a constant temperature water bath at 70°C for constant stirring; after filtration and washing 4 times, it was dried in a vacuum oven at 120°C, and then placed in a high-temperature furnace for sintering at 550°C for 2 hours to obtain a high-voltage platform. Co-Mn-Cu composite oxygen reduction catalyst material.

Embodiment 3

[0024] First, 11.38 g of potassium permanganate was dissolved in deionized water to form solution 1; 8.96 g of cobalt acetate was dissolved in deionized water and 38.4 g of manganese nitrate solution (mass fraction of 50%) was prepared into mixed solution 2; The mixed solution 2 was slowly added to the solution 1 under stirring to form the mixed solution 3; 6.75 g of copper nitrate was dissolved in deionized water and mixed with the mixed solution 3 to make the mixed solution 4; finally, the KOH solution was used to make the mixed solution 4. The pH value was adjusted to 12, and it was placed in a constant temperature water bath at 80°C for constant stirring; after 6 times of suction filtration and washing, it was dried in a vacuum oven at 90°C, and then placed in a high-temperature furnace for sintering at 450°C for 5 hours to obtain a high-voltage platform. Co-Mn-Cu composite oxygen reduction catalyst material.

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Abstract

The invention relates to a Co-Mn-Cu compound oxygen reduction catalyst material for high voltage platform and a preparation method thereof. The preparation method is characterized by specifically comprising the following steps of: firstly, dissolving potassium permanganate in deionized water to form a solution I; then dissolving cobaltous acetate in the deionized water and then preparing a mixed solution II by the cobaltous acetate solution and a manganous nitrate solution; then slowly adding the mixed solution II into the solution I in a stirring condition to form a mixed solution III; mixing a copper nitride solution with the mixed solution III to prepare a mixed solution IV; adjusting the pH value of the mixed solution IV to 10-12 and putting the mixed solution IV in a constant temperature water bath to stir; and performing suction filtration and washing for three times, drying and sintering. The material provided by the invention has the advantages of being simple in preparation process, low in cost of raw materials, easy to produce on a large scale, high in oxygen reduction catalytic activity, high in stability and long in service life and etc, and can better solve the problem that the application of a metal air battery is further limited in an existing material and system.

Description

technical field [0001] The invention relates to a high-voltage platform Co-Mn-Cu composite oxygen reduction catalyst material and a preparation method thereof, which can be applied to the air cathode of a metal-air battery, and belongs to the technical field of power batteries. Background technique [0002] With the increasing environmental problems, the development of new energy vehicles, especially electric vehicles, has become the general trend. At present, lithium-ion batteries and nickel-metal hydride batteries mainly used in electric vehicle power supply have high initial purchase cost, low energy density, long charging time and short cruising range, which cannot meet the needs of the market. Compared with these two kinds of batteries, the aluminum-air battery has many advantages: the negative electrode material aluminum is the metal element with the highest content in the earth's crust, and the price is low; while the positive electrode active material is oxygen in th...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/90H01M4/88H01M12/08
CPCH01M4/8647H01M4/88H01M4/9016H01M12/08Y02E60/10
Inventor 许德超常潇然姜涛陈慧明荣常如张克金
Owner CHINA FIRST AUTOMOBILE
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