The main classification of aluminum batteries

Aluminum battery 3003 aluminum is the ideal anode material, there are currently a variety of aluminum batteries, such as: AL / air type

The AL/air battery is a new type of high specific energy battery. Aluminum, with its unique advantages, will be the material of choice for metal/air battery anodes.

In the AL/air battery, thealuminum 5052 h32 alloy negative electrode is continuously consumed when the battery is discharged, and AL(OH)3 is generated; the positive electrode is a porous oxygen electrode. When the battery is discharged, oxygen (air) entering the electrode from the outside is electrochemically reacted to generate OH. From the point of view of chargeability, the battery can be divided into primary batteries and mechanically rechargeable secondary batteries (ie, replacement of the aluminum negative electrode), and the electrolyte can be classified into a neutral solution (NaCI or NHC1 aqueous solution or seawater) and an alkaline solution.

The Al/air battery can be designed as an emergency power supply, electric vehicle power supply, and signal power supply. As a primary power supply for thrusters, it has an actual specific energy of up to 300-400 Wh/kg, much higher than other metal/air batteries. The structure of the battery and the raw materials used can vary according to the practical environment and requirements, and have great adaptability. However, the complexity of its assembly may hinder its development. Improvement of its battery structure and its performance through reasonable processes will lead to further development of aluminum/air batteries.

Molten salt aluminum

Aluminum has high electronegativity under high temperature conditions and is an ideal electrode material for molten salt systems. Compared with aqueous electrolytes, the advantages of molten salt electrolytes are mainly high conductivity, low polarizability and high decomposition potential. Moreover, aluminum can be electrochemically deposited in the molten salt electrolyte, so it can be developed as an aluminum secondary battery. The aluminum molten salt secondary battery has a higher energy density, but the working voltage of the battery is not high, and aluminum tends to form aluminum brilliance during charging, resulting in poor cycling charge and discharge performance, and excessively depending on the composition of the molten salt. Molten salt electrolytes require high temperatures or harsh requirements on the environment, and the high cost is difficult to maintain, limiting the development of aluminum secondary batteries.

In addition, there are other aluminum batteries including AL/AgO, AL/MnO2, Al/H2O2, Al/S, AL/MnO4, AL/Ni, and AI/KFe(CN)6.

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