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A kind of preparation method of the air electrode of aluminum-air battery

An aluminum-air battery and air electrode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems affecting the performance and service life of air electrodes, insufficient adhesion, leakage, etc., and achieve the distribution of manganese dioxide and carbon Uniformity, good adhesion, and simple process

Inactive Publication Date: 2018-01-23
YUNNAN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of air electrode obtained by three-time structural rolling often causes leakage and fluid accumulation during use due to insufficient adhesion between the layers, which affects the performance and service life of the air electrode.

Method used

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  • A kind of preparation method of the air electrode of aluminum-air battery
  • A kind of preparation method of the air electrode of aluminum-air battery
  • A kind of preparation method of the air electrode of aluminum-air battery

Examples

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Effect test

Embodiment 1

[0047] A method for preparing an air electrode of an aluminum-air battery, comprising the steps of:

[0048] Step (1), 50g potassium permanganate is dissolved in 1000mL deionized water and is mixed with the potassium permanganate solution of concentration 50g / L;

[0049] Step (2), add 2.85g nanometer acetylene black as carbon carrier in the potassium permanganate solution that step (1) makes according to the amount of the substance ratio of potassium permanganate and carbon carrier 1:1, under ultrasonic condition Stir and disperse for 10 minutes to obtain a uniformly dispersed potassium permanganate-carbon solution; the ultrasonic intensity is 50W / cm 2 ; The stirring speed is 200r / min;

[0050] In step (3), the potassium permanganate-carbon solution obtained in step (2) is added in a stainless steel autoclave, and a high-temperature hydrothermal reaction is carried out at 150° C. and a pressure of 0.5 MPa. After the reaction is completed, filter, and the filter residue is was...

Embodiment 2

[0056] A method for preparing an air electrode of an aluminum-air battery, comprising the steps of:

[0057] Step (1), 50g potassium permanganate is dissolved in 2500mL deionized water and is mixed with the potassium permanganate solution of concentration 20g / L;

[0058] Step (2), add 5.7g of activated carbon as carbon carrier to the potassium permanganate solution prepared in step (1) according to the amount of substance ratio of potassium permanganate and carbon carrier of 1:2, and stir under ultrasonic conditions Disperse for 45min to obtain a uniformly dispersed potassium permanganate-carbon solution; the ultrasonic intensity is 90W / cm 2 ; The stirring speed is 1000r / min;

[0059] In step (3), the potassium permanganate-carbon solution obtained in step (2) is added into a stainless steel autoclave, and a high-temperature hydrothermal reaction is carried out at 120°C and a pressure of 0.2MPa. After drying at ℃ for 10 hours, carbon-supported manganese dioxide catalyst powd...

Embodiment 3

[0065] A method for preparing an air electrode of an aluminum-air battery, comprising the steps of:

[0066] Step (1), 50g potassium permanganate is dissolved in 1000mL deionized water and is mixed with the potassium permanganate solution of concentration 25g / L;

[0067] Step (2), add 14.25g graphene to the potassium permanganate solution prepared in step (1) as carbon carrier according to the amount of substance ratio of potassium permanganate and carbon carrier of 1:5, under ultrasonic condition Stir and disperse for 60 minutes to obtain a uniformly dispersed potassium permanganate-carbon solution; the ultrasonic intensity is 70W / cm 2 ; The stirring speed is 600r / min;

[0068] In step (3), the potassium permanganate-carbon solution obtained in step (2) is added into a stainless steel autoclave, and a high-temperature hydrothermal reaction is carried out at 200°C and a pressure of 2.0MPa. After drying at ℃ for 6 hours, carbon-supported manganese dioxide catalyst powder is o...

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Abstract

The invention relates to a method for manufacturing an air electrode of an aluminum-air cell, and belongs to the field of aluminum-air cells. Potassium permanganate is adopted as raw materials, manganese dioxide catalysts are prepared through a hydrothermal synthesis method, carbon-based manganese dioxide catalysts and bonder polyvinylidene fluoride are mixed in proportion and fully and evenly ground in an agate mortar, then N-methyl pyrrolidone solvents are added, grinding continues to be carried out, and sizing agents are formed. A polytetrafluoroethylene film and a conductive nickel screen are compounded into a conductive waterproof and breathable film, the catalyst sizing agents are smeared to the conductive waterproof and breathable film, and the air electrode for the aluminum-air cell is obtained through drying and ageing. Manganese dioxide is prepared through hydro-thermal synthesis, the air electrode is manufactured through film coating, and the advantages of being simple in process, low in cost, high in catalytic activity, long in electrode service life and the like are achieved.

Description

technical field [0001] The invention belongs to the field of aluminum-air batteries, and in particular relates to a method for preparing an air electrode of an aluminum-air battery. Background technique [0002] The aluminum-air battery is a high-energy battery with metal aluminum and its alloys as the negative electrode and the air electrode as the positive electrode. It is expected to achieve an energy density of more than 8000Wh / kg. It is a new generation of high-energy power battery. [0003] The current research on aluminum-air batteries mainly focuses on the synthesis of air electrode catalysts and the preparation of air electrodes. The research on air electrode catalysts mainly focuses on noble metal catalysts, spinel oxides, perovskite oxides, metal chelates, and manganese oxides. Widespread concern. The air electrode of an aluminum-air battery usually consists of a three-layer structure, namely, a catalytic layer, a current collector, and a waterproof and breathab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88
CPCH01M4/88H01M4/8878Y02E60/50
Inventor 谢刚崔涛李怀仁和晓才胥福顺徐俊毅赖浚袁野柯浪姚云刘兆华徐庆鑫魏可谢天鉴施辉献
Owner YUNNAN ALUMINUM
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