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Catalyst for metal-air battery cathode, preparation method and application thereof

A metal-air battery and catalyst technology, applied in battery electrodes, fuel cell-type half-cells, primary battery-type half-cells, circuits, etc., can solve the problems of low air cathode power density, poor long-term stable operation performance, and high cost , to achieve good long-term operation stability, easy mass production, and low cost

Active Publication Date: 2022-01-28
宁波烯铝新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above deficiencies in the prior art, the present invention provides a metal-air battery cathode catalyst and a preparation method thereof to solve the problems of high cost and low performance of the existing metal-air battery cathode catalyst
[0007] The present invention also provides an air cathode for a metal-air battery, so as to solve the disadvantages of low power density and poor long-term stable operation performance of existing air cathodes

Method used

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  • Catalyst for metal-air battery cathode, preparation method and application thereof
  • Catalyst for metal-air battery cathode, preparation method and application thereof
  • Catalyst for metal-air battery cathode, preparation method and application thereof

Examples

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Embodiment 1

[0045] The preparation method of the metal-air battery cathode catalyst of the present embodiment comprises the following steps:

[0046] S1: Mix 600mL cyclohexane, 30g cetyltrimethylammonium bromide and 20mL isobutanol, stir evenly and divide into solution a, solution b and solution c;

[0047] S2: Weigh 10g manganese nitrate and dissolve it in 10mL deionized water, add 10g citric acid to prepare a manganese nitrate solution, stir well, add it into solution a to obtain microemulsion A; weigh 3g cobalt nitrate and dissolve it in 10mL deionized In water, it is prepared as cobalt nitrate solution, after stirring evenly, it is added into solution b to obtain microemulsion B; 10 g of sodium hydroxide is dissolved in deionized water to prepare a strong alkali solution, after stirring evenly, it is added into solution c to obtain 270mL Microemulsion C;

[0048] S3: Pour microemulsion A and microemulsion B into a three-necked flask, mix evenly, add microemulsion C dropwise in two st...

Embodiment 2

[0058] The preparation method of the metal-air battery cathode catalyst of the present embodiment comprises the following steps:

[0059] S1: Mix 600mL cyclohexane, 30g cetyltrimethylammonium bromide and 20mL isobutanol, stir evenly and divide into solution a, solution b and solution c;

[0060] S2: Weigh 10g of manganese nitrate and dissolve it in 10mL of deionized water, add 10g of citric acid to prepare a manganese nitrate solution, stir well, then add it into solution a to obtain microemulsion A; weigh 5g of cobalt nitrate and dissolve it in 10mL of deionized water , prepared into cobalt nitrate solution, stirred evenly, added to solution b to obtain microemulsion B; dissolved 10g of sodium hydroxide in deionized water, prepared into a strong alkali solution, stirred evenly, added to solution c to obtain 270mL Microemulsion C;

[0061] S3: Pour microemulsion A and microemulsion B into a three-necked flask, mix evenly, add microemulsion C dropwise in two stages for reactio...

Embodiment 3

[0066] The preparation method of the metal-air battery cathode catalyst of the present embodiment comprises the following steps:

[0067] S1: Mix 800mL n-heptane, 40g polyethylene glycol and 30mL n-pentanol, stir evenly and divide into solution a, solution b and solution c;

[0068] S2: Dissolve 15g of manganese nitrate in 15mL of deionized water, add 20g of citric acid to prepare a manganese nitrate solution, stir well, then add to solution a to obtain microemulsion A; weigh 10g of nickel nitrate and dissolve in 15mL of deionized In water, it is formulated as nickel nitrate solution, and after stirring evenly, it is added in solution b to obtain microemulsion B; 20 g of potassium hydroxide is dissolved in deionized water to prepare a strong alkali solution, and after stirring evenly, it is added into solution c to obtain 360mL microemulsion C;

[0069] S3: Pour microemulsion A and microemulsion B into a three-necked flask, mix evenly, add microemulsion C dropwise in two stag...

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Abstract

The invention discloses a method for preparing a catalyst for a cathode of a metal-air battery, which comprises the following steps: S1: mixing an oil phase, a surfactant and a co-surfactant, and dividing them into three equal solutions; S2: preparing manganese salt solutions respectively , cobalt salt and / or nickel salt solution and strong alkali solution are added to the above three solutions to obtain microemulsion A, microemulsion B and microemulsion C respectively; S3: pour microemulsion A and microemulsion B into a three-necked flask , and then drop the microemulsion C in two stages to react, and perform the joint action of ultrasonic cavitation and open microwave in the above two-stage dropping process; S4: After the dropping reaction is completed, the reaction product is roasted at high temperature, The catalyst is obtained. The catalyst prepared by the invention has the advantages of low cost and high performance, and when it is prepared as an air cathode of a metal-air battery, the power density and long-term stable operation performance of the air cathode can be improved.

Description

technical field [0001] The invention relates to the field of metal-air batteries, in particular to a catalyst for metal-air battery cathodes, a preparation method and application thereof. Background technique [0002] With the increasingly scarce fossil fuel reserves and the increasingly serious air pollution, it is imminent for people to find sustainable energy sources. Fuel cells have the advantages of high energy conversion rate and no pollution, and have become a research hotspot in the direction of new energy. Fuel cells include proton exchange membrane fuel cells, solid oxide fuel cells, metal-air fuel cells, and the like. [0003] Metal-air batteries take advantage of the advantages of fuel cells, with oxygen in the air as the cathode and metals (magnesium, aluminum, zinc, etc.) , aluminum, zinc, etc.) react to release electricity. The outstanding advantage of the metal-air battery is its large specific energy. In the alkaline electrolyte solution, the theoretical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M4/86H01M12/06
CPCH01M4/8878H01M4/9016H01M4/8657H01M12/06H01M2004/8684
Inventor 何益锋李祥飞杨闯董正豪刘旺
Owner 宁波烯铝新能源有限公司