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A kind of preparation method of high conductivity carbon black composite material for air electrode

A composite material, air electrode technology, applied in the field of electrochemical technology and battery manufacturing, can solve the problems of poor conductivity, poor waterproofness, poor air permeability, etc., achieve good conductivity, overcome poor air permeability, and good waterproof effect.

Inactive Publication Date: 2016-11-30
刘伟春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of realizing the present invention, the inventors found that there are at least defects such as poor air permeability, poor waterproofness and poor electrical conductivity in the prior art.

Method used

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  • A kind of preparation method of high conductivity carbon black composite material for air electrode
  • A kind of preparation method of high conductivity carbon black composite material for air electrode
  • A kind of preparation method of high conductivity carbon black composite material for air electrode

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Embodiment 1

[0034] According to an embodiment of the present invention, a method for preparing a highly conductive carbon black composite material for an air electrode is provided. This embodiment includes:

[0035] (1) Using a vacuum pump, suck the raw materials including at least the following components and mass ratios into the reactor, and perform mixing and stirring treatment at a rotation speed of 30 rpm under normal temperature conditions:

[0036] Carbon black: 50 parts;

[0037] Hot melt: 25 parts;

[0038] Polymer resin: 20 parts;

[0039] Pore ​​former: 5 parts;

[0040] (2) After mixing and stirring for 30 minutes, the temperature is increased to 130°C at a rate of 5°C / min, and the temperature is kept constant for 30 minutes, and the heat is uniformly melted;

[0041] (3) Use a condenser to discharge the liquid in the reaction kettle, heat it up to 250°C at a rate of 2°C / min, and stir at constant temperature for 30 minutes, keep the constant temperature, let the reaction kettle work cont...

Embodiment 2

[0050] The difference from the above-mentioned embodiment is that in this embodiment, the preparation method of the highly conductive carbon black composite material for air electrode includes:

[0051] (1) Using a vacuum pump, suck the raw materials including at least the following components and mass ratios into the reactor, and perform mixing and stirring treatment at room temperature:

[0052] Carbon black: 60 parts;

[0053] Hot melt: 20 parts;

[0054] Polymer resin: 10 parts;

[0055] Pore ​​former: 10 parts;

[0056] (2) After mixing and stirring for 50 minutes, the temperature is increased to 80-130°C at a rate of 1°C / min, and the temperature is kept constant for 50 minutes to melt uniformly;

[0057] (3) Use a condenser to discharge the liquid in the reaction kettle, heat up to 100-250°C at a rate of 1°C / min, and stir at a constant temperature for 1 hour, then keep the constant temperature temperature, make the reaction kettle work continuously for 3 hours, and naturally cool to...

Embodiment 3

[0061] The difference from the above-mentioned embodiment is that in this embodiment, the preparation method of the highly conductive carbon black composite material for air electrode includes:

[0062] (1) Using a vacuum pump, suck the raw materials including at least the following components and mass ratios into the reactor, and perform mixing and stirring treatment at room temperature:

[0063] Carbon black: 55 parts;

[0064] Hot melt: 22.5 parts;

[0065] Polymer resin: 15 parts;

[0066] 7.5 parts of pore former;

[0067] (2) After mixing and stirring for 50 minutes, the temperature is raised to 100°C at a rate of 3.5°C / min, and the temperature is kept constant for 40 minutes to uniformly heat and melt;

[0068] (3) Use a condenser to discharge the liquid in the reaction kettle, heat it up to 125°C at a rate of 1.5°C / min, and stir at a constant temperature for 45 minutes, then keep the constant temperature, let the reaction kettle work continuously for 3 hours, and naturally cool to...

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Abstract

The invention discloses a preparation method of a high-conductivity carbon black composite material for an air electrode, comprising: using a vacuum pump, mixing 50-60 parts of carbon black, 20-25 parts of hot melt, 10-20 parts of polymer resin and a pore-forming agent 5-10 parts are sucked into the reactor, mixed and stirred at room temperature for 30-50min, then heated to 80-130℃ at a rate of 1-5°C / min and kept at a constant temperature for 30-50min; Raise the temperature at a rate of -2°C / min to 100-250°C and stir at a constant temperature for 30-60min, then cool down to room temperature naturally; under the condition of 1-4Mpa, suction filter the remaining solvent in the reaction kettle, and introduce high-pressure air of 10-20Mpa , the solid mixed material obtained in the reaction kettle was pulverized by airflow whirling for 20-40 minutes, and the conductive carbon black composite material was obtained by vacuuming. The preparation method has the advantages of good gas permeability, good water resistance, good conductivity and good environmental protection.

Description

Technical field [0001] The invention relates to the fields of electrochemical technology and battery manufacturing technology, in particular to a method for preparing a high-conductivity carbon black composite material for air electrodes. Background technique [0002] At present, in the fields of electrochemical technology and battery manufacturing technology, metal-air batteries have high mass specific energy and mass specific power, so it has a broad potential market. There are many types of metal-air batteries, but in terms of applicability and the price of recoverable electrode materials, zinc-air batteries are the most attractive. [0003] Zinc-air battery has the advantages of large capacity, high specific energy, low cost, and stable discharge. It is a chemical power source with huge market prospects. According to the prediction of relevant experts, it is lower than the ordinary fuel cell cost and has the shortest path to commercialization. [0004] However, the air electrod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M12/02
Inventor 刘伟春
Owner 刘伟春