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Aluminum air battery aluminum anode slurry for 3D printing and preparation method and application thereof

An aluminum-air battery, 3D printing technology, applied in electrode manufacturing, battery electrodes, electrode extrusion, etc., can solve problems such as hydrogen precipitation, battery corrosion discharge, battery voltage drop, etc.

Inactive Publication Date: 2021-05-18
南京信息工程大学滨江学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because aluminum is easy to oxidize, there are many problems in aluminum anodes. First, due to the existence of a passivation film on the aluminum surface, the potential of the aluminum electrode will increase and the battery voltage will drop; second, the oxide film on the aluminum surface will be destroyed. After that, a large amount of hydrogen gas will be precipitated, resulting in serious self-corrosion discharge of the battery.

Method used

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  • Aluminum air battery aluminum anode slurry for 3D printing and preparation method and application thereof
  • Aluminum air battery aluminum anode slurry for 3D printing and preparation method and application thereof
  • Aluminum air battery aluminum anode slurry for 3D printing and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0020] (1) Take a metal powder with a particle size of 50-100 μm and 1 kg, the mass percentages are as follows: 0.25% Sn, 0.25% In, 0.6% Mg, and the balance is Al with a purity of ≥99.99%, mix the metal powder with 1000 mL of absolute ethanol Mixed in a ball mill jar, using Si with a diameter of 10mm 3 N 4 balls, milled for 8h at a speed of 800r / min;

[0021] (2) placing the ball-milled mixed solution in a constant temperature water bath at 80°C and drying until the alcohol is completely volatilized to obtain dry metal mixed powder;

[0022] (3) Add 100 ml of tea polyphenols, 100 ml of polyethylene, 300 ml of benzene, and 100 ml of ethyl cellulose to the dry metal mixed powder, place the mixed solution in a ball mill, and place the mixed solution in a ball mill with a speed of 800 r / min and a diameter of 10 mm. 3 N 4 Under the condition of ball, ball mill for 8 hours to obtain a mixed slurry with a viscosity of 100 Pa.s. All of the above steps were done in a nitrogen-fille...

Embodiment 2

[0026] (1) Take a metal powder with a particle size of 20-40 μm and 1 kg, the mass percentages are as follows: 0.05% Sn, 0.05% In, 0.2% Mg, and the balance is Al with a purity of ≥99.99%, mix the metal powder with 600 mL of absolute ethanol Mixed and placed in a ball mill jar, using Si with a diameter of 6mm 3 N 4 Balls, milled for 4h at a speed of 400r / min;

[0027] (2) placing the ball-milled mixed solution in a constant temperature water bath at 60°C and drying until the alcohol is completely volatilized to obtain dry metal mixed powder;

[0028] (3) 40ml of dibutylhydroxytoluene, 40ml of polyethylene glycol, 60ml of acetone, and 60ml of ammonium methacrylate were added to the dry metal mixed powder, and the mixed solution was placed in a ball milling tank. 6mm Si 3 N 4 Under the condition of balls, ball milling was carried out for 4 hours to obtain a mixed slurry with a viscosity of 37 Pa.s. All of the above steps were done in a nitrogen-filled, sealed glove box. Fir...

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Abstract

The invention discloses aluminum air battery aluminum anode slurry for 3D printing and a preparation method and application thereof. The slurry comprises metal mixed powder and slurry, the ratio of the metal mixed powder to the slurry is 1g:(0.3-1.2) mL, the slurry comprises an antioxidant, a dispersing agent, an organic solvent and an organic adhesive, the metal mixed powder comprises Sn, In, Mg and the balance Al with the purity larger than or equal to 99.99%, and the metal mixed powder comprises Al with the purity larger than or equal to 99.99%. The viscosity of the slurry is 1-100 Pa.s; and the preparation method of the slurry comprises the following steps: (1) taking metal powder, and mixing and ball-milling the metal powder and absolute ethyl alcohol; (2) drying the ball-milled mixed solution until the alcohol is completely volatilized to obtain dried metal mixed powder; and (3) adding an antioxidant, a dispersing agent, an organic solvent and an organic adhesive into the dried metal mixed powder for ball milling, and obtaining slurry. The slurry can be applied to an aluminum anode of a 3D printing aluminum air battery. The slurry can increase the porosity of the anode, reduces the self-corrosion of the aluminum anode, is stable in performance, and improves the utilization rate of the anode.

Description

technical field [0001] The invention relates to a slurry, a preparation method and application thereof, and more particularly, to an aluminum anode slurry for an aluminum-air battery for 3D printing, and a preparation method and application thereof. Background technique [0002] Metal-air battery is a kind of "semi-fuel" cell between primary cell and fuel cell. It has excellent performance, simple structure, large capacity, high specific energy, low cost, stable discharge, safety, reliability and environmental protection. Features, aluminum-air batteries have high energy density, high electrochemical equivalent, recyclable, non-toxic and non-polluting, and have obvious advantages in the field of metal-air batteries. However, due to the easy oxidation of aluminum, there are many problems with aluminum anodes. First, due to the presence of a passivation film on the aluminum surface, the potential of the aluminum electrode will rise and the battery voltage will drop; second, th...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/46H01M4/04H01M12/06B22F1/00B22F9/04B22F10/28B33Y70/10B33Y10/00
CPCH01M4/628H01M4/463H01M4/04H01M4/0411H01M12/06B22F9/04B33Y70/10B33Y10/00B22F2009/043B22F1/107Y02E60/10
Inventor 韩基泰汪磊夏庆锋孙丰勇段为朋
Owner 南京信息工程大学滨江学院
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