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A novel printable flexible paper-based aluminum-air battery

An aluminum-air battery, paper-based technology, applied in battery electrodes, fuel cell-type half-cells and secondary battery-type half-cells, circuits, etc. cost, the effect of realizing large-scale application

Active Publication Date: 2021-09-21
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional aluminum-air battery has a rigid structure and a complex water management system. Even if it is designed as a flexible battery, it will inevitably cause irreversible deformation after repeated bending, folding and stretching. The shedding of the active material will lead to a rapid decline in battery performance or even failure

Method used

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  • A novel printable flexible paper-based aluminum-air battery

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preparation example Construction

[0044] Further, the preparation method of the aluminum ink anode comprises the following steps:

[0045] 1. After selecting two or more of Ga, In, Sn, Zn, and Bi according to the ratio, heat and hold for 1-2 hours in an inert gas atmosphere at a temperature 100°C higher than the melting point of the selected element to obtain a liquid alloy Finally, alloy the liquid alloy at room temperature for 10-24h;

[0046] 2. Mix liquid alloy, surfactant, and solvent according to 0.01-10g: 0.01-20g: 10-100ml, and ultrasonically stir for 20-40min to prepare liquid alloy particles;

[0047] 3. Control the mass ratio of aluminum powder and liquid alloy particles between 10:1 and 50:1, and the mass ratio of aluminum powder and carboxymethyl cellulose between 30:1 and 150:1; and carboxymethyl cellulose are mixed and added to 30-70% ethanol solution, and ultrasonicated for 10-30 minutes to ensure uniform mixing to prepare an aluminum ink anode.

[0048] Further, the carbon ink cathode is mad...

Embodiment 1

[0052]The aluminum ink anode is prepared by commercially available 200 mesh aluminum powder, mass fraction 74.5%: Ga25.5% In liquid alloy, carboxymethyl cellulose (CMC), 50% ethanol aqueous solution; the carbon ink air cathode is prepared by 50% MnO 2 -CNTs, Nafion binder, and 50% ethanol aqueous solution are prepared; the electrolyte is 2M NaCl.

[0053] 1. Preparation of aluminum ink anode:

[0054] (1) Heating a gallium-indium alloy with a mass fraction of 74.5% Ga: 25.5% In in a nitrogen atmosphere to 300°C and holding it for 2 hours to obtain a liquid alloy, and alloying the liquid alloy for 20 hours;

[0055] (2) Mix the prepared gallium indium liquid alloy, surfactant sodium lauryl sulfate, and solvent N-methylpyrrolidone according to 1g: 1g: 20ml, and ultrasonically stir for 30 minutes to obtain liquid alloy particles;

[0056] (3) Aluminum powder, liquid alloy particles, and carboxymethyl cellulose were mixed at a mass ratio of 40:2:1, then added to 50% ethanol aqueo...

Embodiment 2

[0066] Aluminum ink anode is prepared by commercially available 200 mesh aluminum powder, mass fraction 66% Ga: 13.5% In: 20.5% Sn liquid alloy, carboxymethyl cellulose (CMC), 30% ethanol aqueous solution; carbon ink air cathode is prepared by 50% MnO 2 -CNTs, Nafion binder, and 30% ethanol aqueous solution are prepared; the electrolyte is 2M NaCl.

[0067] 3. Preparation of aluminum ink anode:

[0068] (4) Heating a gallium indium tin alloy with a mass fraction of 66% Ga: 13.5% In: 20.5% Sn to 250°C in a nitrogen atmosphere and holding it for 2 hours to obtain a liquid alloy, and alloying the liquid alloy for 20 hours;

[0069] (5) Mix the prepared gallium indium liquid alloy, the surfactant sodium lauryl sulfate, and the solvent N-methylpyrrolidone according to 1g: 2g: 10ml, and ultrasonically stir for 30 minutes to obtain liquid alloy particles;

[0070] (6) Aluminum powder, liquid alloy particles and carboxymethyl cellulose were mixed at a mass ratio of 30:3:1, then added...

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Abstract

The invention discloses a novel flexible paper-based aluminum-air battery which can be printed. It consists of three parts: an aluminum ink anode, a carbon ink cathode, and a paper base. The aluminum ink anode and the carbon ink cathode are respectively covered on both sides of the paper base. The aluminum The ink anode is added with liquid alloy particles. The aluminum ink anode is activated by adding liquid alloy particles, and the added liquid alloy particles can also play the roles of bonding, current collection, and conduction. The invention prepares the aluminum ink anode and the carbon ink cathode activated by the liquid alloy, prints them on both sides of the printer paper, and discharges them externally through the activation of the electrolyte. Such a structural design makes the aluminum-air battery have excellent low-power electrochemical performance, and the battery can also be printed into fabrics to power wearable electronic devices, which is expected to achieve large-scale applications.

Description

technical field [0001] The invention relates to the field of aluminum-air batteries, in particular to a novel flexible paper-based aluminum-air battery that can be printed. Background technique [0002] The continuous improvement of people's living standards and the demand for renewable and environmentally friendly energy have promoted the development of small electronic devices, such as wearable storage devices. In recent years, the application of flexible / wearable devices has attracted extensive attention from academia and industry, and plays an irreplaceable role in the fields of smart clothing, biomonitors, electronic paper, epidermal electronics, and flexible displays. However, wearable electronic products require that the power supply adapted to it has the characteristics of light weight, small size, arbitrary deformation, simple and fast manufacturing process, and low cost. [0003] Inkjet printing is one of the most important plateless printing technologies. Its bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/62H01M4/66H01M12/08
CPCH01M4/362H01M4/62H01M4/621H01M4/626H01M4/662H01M12/08Y02E60/10
Inventor 高钱王宏超
Owner JILIN UNIV
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