In this review, we present the fundamentals, challenges and the recent advances in Al–air battery technology from aluminum anode, air cathode and electrocatalysts to electrolytes and inhibitors.
Are aluminum-air batteries a promising energy storage solution?
Here, aluminum–air batteries are considered to be promising for next-generation energy storage applications due to a high theoretical energy density of 8.1 kWh kg −1 that is significantly larger than that of the current lithium-ion batteries.
Are Al air batteries a sustainable technology?
The Al–air battery has proven to be very attractive as an efficient and sustainable technology for energy storage and conversion with the capability to power large electronic devices and vehicles. This review has summarized recent developments of Al anode, air cathode, and electrolytes in Al–air batteries.
What is the energy density of aluminum air batteries?
Owing to their attractive energy density of about 8.1 kW h kg −1 and specific capacity of about 2.9 A h g −1, aluminum–air (Al–air) batteries have become the focus of research.
Are Al-air batteries a good choice for next-generation rechargeable batteries?
In addition, Al–air batteries possess a high theoretical voltage (2.7 V) and an energy density (8.1 kWh kg −1) that are second only to Li of the various metal–air batteries and are large enough to be considered for next-generation rechargeable batteries.
Al–air batteries possess great potential for practical application due to their large energy capacity and in this review, Al–air batteries with Al anodes, electrolytes and air cathodes have been discussed and the possibility of creating rechargeable Al–air batteries has been presented.
What is a metal air battery?
Alternatively, metal–air batteries such as Al–air batteries are a combination of both battery and fuel cell components. In these batteries, the anode consists of a solid metal electrode (Al), while the cathode utilizes the oxygen present in the air.