Polymer Electrolytes for Al-Air Batteries: Current State and Future Perspectives

Gaele, Maria F.; Palma, Tonia M. Di

doi:10.1021/acs.energyfuels.2c02453

Cited by 20 publications

(13 citation statements)

References 123 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metal–air batteries are constructed from a metal anode and porous air cathode with a proper air-stable electrolyte (typically 6 M KOH for liquid batteries and gel polymer electrolytes for all-solid state batteries). The metal anode can be alkali metals (e.g., Li, Na, and K), alkaline earth metals (e.g., Mg), or first-row transition metals (e.g., Fe, Al, and Zn) with good electrochemical equivalence. − A graph showing the theoretical energy densities of various metal–air batteries is shown in Figure (a). Among various metal–air batteries, lithium–air has attractive characteristics owing to its energy content (theoretical energy density >11,000 Whkg –1 ) being almost about 100 times higher than the lithium–ion batteries.…”

Section: Organic Monolayers For Metal–air Batteriesmentioning

confidence: 99%

“…Therefore, the development of lightweight and flexible electrochemical energy storage devices is very important at this point of time. However, rigid solid electrolytes are vulnerable to mechanical strain and are prone to exhibit deteriorated ionic conductivity due to evaporation of electrolytes. , To address these challenges, thin and flexible polymer electrolytes are continuously developed to realize a full potential solid-state metal–air battery. , In this regard, Zn–air and Al–air batteries are strategically most important, yet far from providing the desired output despite their high theoretical capacities. This is because of the parasitic side reactions leading to the formation of insoluble products which block the electrolyte.…”

Section: Challenges and Perspectivesmentioning

confidence: 99%

“…137,138 To address these challenges, thin and flexible polymer electrolytes are continuously developed to realize a full potential solid-state metal−air battery. 73,139 In this regard, Zn−air and Al−air batteries are strategically most important, yet far from providing the desired output despite their high theoretical capacities. This is because of the parasitic side reactions leading to the formation of insoluble products which block the electrolyte.…”

Section: Challenges and Perspectivesmentioning

confidence: 99%

See 2 more Smart Citations

Review on Molecularly Controlled Design of Electrodes for Metal–Air Batteries: Fundamental Concepts and Future Directions

Dilshad

Rabinal

2023

Energy Fuels

View full text Add to dashboard Cite

Surface states of solids provide a unique way to graft organic molecules into monolayers by simple dip chemistry. Such interfaces can be highly functional and serve as a foundation for the formation of precisely controlled nanostructures of other materials via atomic/molecular diffusion, adsorption, and growth. The coverage, orientation, consistency, and functionality of these monolayers can be easily tailored to create technologically important materials. On the other hand, research on batteries has skyrocketed in recent times due to a paradigm shift toward nonconventional energy resources and the pledge of the transport sector to go soon all electric. Therefore, meeting energy demands by coping with global climate protocols is important for sustainable development. In this regard, the fabrication of efficient, stable, and long-lasting electrodes for lithium as well as nonlithium batteries is needed. However, they suffer from several electrode issues which ultimately limit their storage capacity and cycle life. Recently, there has been a scientific trend to incorporate suitably chosen organic monolayers for controlled syntheses of active materials that are highly catalytic and functional to improve the performances of metal–air and other batteries. Moreover, molecular surface modification techniques have been commercially adopted for corrosion inhibition, moletronics, surface activation/protection, etc. Looking at the resurgence of molecular engineering and unconventional energy storage systems in recent times, it is necessary to bring molecular dynamics and versatility in designing novel electrode materials. This review intends to increase the attention to address the challenges of battery electrodes using cutting-edge surface chemistry and molecular engineering techniques by providing critical insights on molecular monolayers for the development of futuristic metal–air batteries.

show abstract

Section: Organic Monolayers For Metal–air Batteriesmentioning

confidence: 99%

Section: Challenges and Perspectivesmentioning

confidence: 99%

Section: Challenges and Perspectivesmentioning

confidence: 99%

See 1 more Smart Citation

Review on Molecularly Controlled Design of Electrodes for Metal–Air Batteries: Fundamental Concepts and Future Directions

Dilshad

Rabinal

2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Metal–air batteries deliver higher theoretical energy density than that of conventional Li-ion batteries and are considered as a robust and viable electrochemical energy storage means for next generation electric vehicles. − The simple yet effective design of metal–air batteries which consists of metal anode, air breathing cathode and an appropriate electrolyte is very alluring . Discharging of any particular metal–air battery involves few steps that include the transformation of metal into ions at the anodic surface and oxygen into hydroxide ions at cathodic surface.…”

Section: Introductionmentioning

confidence: 99%

“…Al–air batteries are typically designed by employing non-aqueous, alkaline, or neutral electrolytes. Non-aqueous electrolytes suffer due to important drawbacks which include lower conductivities, toxicity, and flammability. − On the other hand, the alkaline electrolytes are considered unsafe owing to their corrosive nature. Furthermore, due to the availability of higher concentrations of hydroxide ion in alkaline electrolytes, the deposition of discharge products on the cathodic surface could be higher when compared to that with aqueous electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Reductive Electrolysis Mixture Additive-Based Dual-Cell Configuration: An Effective Approach for High-Performance Aqueous Aluminum–Air Battery

et al. 2023

View full text Add to dashboard Cite

Neutral aqueous electrolyte-based aluminum−air (Al−air) batteries have managed to gather significant attention because of their characteristic safety and cost effectiveness. However, the formation of the passivation layer [Al(OH) 3 ] on the aluminum anode inhibits the long-term shelf life of the battery. Herein, a novel strategy to overturn the passivation by altering the aluminum/electrolyte interface is proposed. Incorporation of synergistic reductive electrolysis mixture additives (Tiron + NaNO 3 ) can significantly reduce the passivation of the aluminum anode. The efficacy of the Tiron + NaNO 3 synergistic mixture additive has been systematically examined using half-cell and full-cell with different concentrations of the additives in 0.5% NaCl. Furthermore, dual cell performance was investigated with optimum concentration (0.005 M Tiron + 0.005 M NaNO 3 ) of the additive in 0.5% NaCl as the anolyte and different concentrations of H 2 SO 4 as the catholyte. It is found that the resulting pumpless dual cell battery comprising neutral electrolyte with 0.005 M Tiron + 0.005 M NaNO 3 mixture additive as the anolyte and 1 M H 2 SO 4 as the catholyte demonstrated a remarkable cell potential of 1.14 V at a current density of 1 mA g −1 , which is closer to the theoretical value. Morphological investigations using optical microscopy studies and X-ray photoelectron spectroscopic investigations also confirmed that the Tiron + NaNO 3 additive is effective in preventing the discharge product on both anode and cathode surfaces and thus resulting in enhanced battery performance.

show abstract

Recent Advances in Wearable Aqueous Metal‐Air Batteries: From Configuration Design to Materials Fabrication

Chen

Fang

2023

Adv Materials Technologies

View full text Add to dashboard Cite

The advent of the information age has promoted the development of smart wearable electronics for acquiring real-time data, such as smart bracelets, real-time health monitors, electronic skins, and smart clothes, [1][2][3][4][5][6][7][8][9] which has in turn promoted the development of power supply systems with high operational safety, long cycle life, high energy, and excellent deformability. Among recently developed flexible power supplies, [10][11][12][13][14] flexible lithium-ion (Li-ion) batteries have been dominantly employed in wearable electronics because of competitive chargedischarge efficiency (≈90%), high energy density (≈400 W h kg −1 ), durable cycling life (≈5000 cycles) and mature Li-ion battery infrastructure. [15] Moreover, wearable fiber Li-ion batteries can be woven into textiles, offering a convenient way to power wearable electronics. [16][17][18] Nonetheless, the safety and environmental risks caused by the usage of flammable/ toxic organic electrolytes restrict the further advance of Li-ion batteries and make them unsatisfied to be integrated with wearable electronic devices in proximity to the human body. [15,19] Further efforts are highly demanded to explore alternative power systems with promising energy density, reliable discharge-charge characteristics, long operation life, and good safety.In recent years, metal-air batteries have received widespread attention because of their remarkable theoretical energy density, environmental-friendliness, low fuel cost, and superior safety. [20][21][22][23] In particular, their unique half-open systems can continuously utilize the oxygen from ambient air instead of storing gaseous oxygen in closed systems, thus the required mass and volume of the air electrode can be largely minimized, resulting in high theoretical energy densities. [24] Compared to the theoretical energy density of Li-ion batteries with a closed system (460 Wh kg −1 ), lithium-air (Li-air) batteries exhibit much higher theoretical energy density (≈3500 W h kg −1 , based on the discharge product of Li 2 O 2 ). [25,26] Flexible wearable metal-air batteries, combining the flexible deformation feature and the high theoretical energy density, have become attractive energy supply systems for wearable electronic devices. Since 2015, wearable metal-air batteries (i.e., zinc-air (Zn-air), Li-air, aluminum-air (Al-air), sodium-air (Na-air), potassium-air (K-air), With the increasing popularity of personal wearable electronic devices used for healthcare, entertainment, and sports applications, the corresponding energy supply and space adaptability of devices are required to meet higher standards. Owing to large energy densities and intrinsic safety, wearable aqueous metal-air batteries have shown great potential to be energy storage/ conversion integrated systems for wearable electronic devices characterized by long-term low-power operation. In contrast to non-aqueous electrolytes, aqueous-based electrolytes exhibit greater ionic conductivity, higher operational safety, lower cost, and super...

show abstract

Polymer Electrolytes for Al-Air Batteries: Current State and Future Perspectives

Cited by 20 publications

References 123 publications

Review on Molecularly Controlled Design of Electrodes for Metal–Air Batteries: Fundamental Concepts and Future Directions

Review on Molecularly Controlled Design of Electrodes for Metal–Air Batteries: Fundamental Concepts and Future Directions

Synergistic Reductive Electrolysis Mixture Additive-Based Dual-Cell Configuration: An Effective Approach for High-Performance Aqueous Aluminum–Air Battery

Recent Advances in Wearable Aqueous Metal‐Air Batteries: From Configuration Design to Materials Fabrication

Contact Info

Product

Resources

About