Ultrathin Al–air batteries by reducing the thickness of solid electrolyte using aerosol jet printing

Abstract

Flexible Al–air batteries have great potential in the field of wearable electronic devices. However, how to reduce the thickness of the battery and improve their applicability in wearable applications is still an unresolved thorny problem. Therefore, this article focuses on the strategies to minimize the thickness of the solid electrolyte for flexible Al–air batteries. In this paper, an innovative aerosol jet printing method is used to prepare the ultrathin neutral electrolyte with a thickness of 18.3–74.5 μm. This study discusses the influence of the thickness and ion concentration on the conductance of the electrolyte in detail. The ultrathin electrolyte has been applied to the flexible Al–air battery, and the battery performance has been explored. The cell pack composed of single cells is light and thin, and can successfully drive small electrical equipment. This study provided new ideas for the preparation of ultrathin electrolyte for flexible energy products.

Aluminum–air batteries: current advances and promises with future directions

“…Furthermore, the presence of Cl − ions in the denser electrolyte is adequate for their penetration in the surface of the Al anode, enabling their active involvement in the electrochemical reaction. 240 Pan et al created a cotton-based Al-air battery using a lowcost industrial-grade Al plate as the anode. The selection of cotton as the substrate was based on its superior electrolyte storage capacity and reduced resistance to ion diffusion.…”

Hydrothermal Synthesis of Nickel Oxide and Its Application in the Additive Manufacturing of Planar Nanostructures

“…Printing technologies are an alternative to the above methods, which can considerably reduce the above limitations. Today, methods such as inkjet printing [ 51 , 52 , 53 , 54 ], aerosol printing [ 55 , 56 , 57 , 58 ], microplotter printing [ 59 , 60 , 61 ], microextrusion printing [ 62 , 63 , 64 ] and pen plotter printing [ 65 , 66 ] allow for the use of different types of inks (both true solutions and powder-based disperse systems) to form coatings of desired thickness and geometry on substrates of different natures. The above approaches are being actively developed in the context of obtaining materials for alternative energy, electronics, gas sensing, and optics.…”

Effect of Indole-2-carboxylic Acid on the Self-Corrosion and Discharge Activity of Aluminum Alloy Anode in Alkaline Al–Air Battery

“…Li-air, Mg-air, Zn-air, and Al–air batteries are the main types of aqueous metAl–air batteries powered by metals and oxygen from the air [ 4 , 5 , 6 ]. The Al–air battery stands out among these batteries due to its high theoretical energy density (8100 Wh kg −1 ), constant discharge voltage, and low cost [ 7 , 8 ]. The negative and positive electrodes are aluminum and airborne oxygen, respectively.…”