What are the advantages and disadvantages of aluminum air batteries

The chemical reaction of the aluminum air battery is similar to that of the zinc air battery. The aluminum air battery uses a high-purity aluminum Al(99.99 % aluminum) as a negative electrode, oxygen as a positive electrode, and potassium hydroxide(KOH) or sodium hydroxide(NaOH) aqueous solution as an electrolyte. Aluminum absorbs oxygen in the air, produces a chemical reaction when the battery discharges, and aluminum and oxygen are converted into aluminum oxide.

operating principle

The chemical reaction of the aluminum air battery is similar to that of the zinc air battery. The aluminum air battery uses a high-purity aluminum Al(99.99 % aluminum) as a negative electrode, oxygen as a positive electrode, and potassium hydroxide(KOH) or sodium hydroxide(NaOH) aqueous solution as an electrolyte. Aluminum absorbs oxygen in the air, produces a chemical reaction when the battery discharges, and aluminum and oxygen are converted into aluminum oxide. The progress of aluminum air batteries is very rapid. Its application on EV has achieved good results. It is a very promising air battery.

Advantages and disadvantages of aluminum air batteries

Aluminum air batteries, as the name implies, are a new type of battery that uses aluminum and air as battery materials. It is a pollution-free, long-lasting, stable and reliable power supply, is a very environmentally friendly battery. The structure of the battery and the raw materials used can vary according to different practical environments and requirements. It has great adaptability and can be used both on land and in the deep sea. It can be used as a power cell and can be used as a signal battery with a long life. Is a very powerful battery, has a very broad application prospects.

The chemical reaction of the aluminum air battery is similar to that of a zinc air battery. The aluminum air battery uses a high-purity aluminum Al(including 99.99 <UNK>) as a positive electrode, oxygen as a negative electrode, and potassium hydroxide(KOH) and sodium hydroxide(NaOH) aqueous solution as electrolytes. Aluminum absorbs oxygen in the air, produces a chemical reaction when the battery discharges, and aluminum and oxygen are converted into aluminum oxide. The progress of aluminum air batteries is very rapid. Its application on EV has achieved good results. It is a very promising air battery.

Aluminum air battery characteristics:

1, more than energy

The actual specific energy of an aluminum air battery is only 350 to 400 Wh / kg, which is less than 5 % of its theoretical value. However, the specific energy of this 5 % is also 7 to 8 times that of lead-acid batteries, 5.8 times that of nickel-metal hydrogen batteries, and 2.3 times that of lithium batteries.

If the use of aluminum air batteries for electric vehicles, mileage significantly increased. According to information from abroad, California, the United States, has recorded only one replacement of aluminum electrode mileage of 1600 km on electric vehicles using aluminum air batteries.

2, light quality

The total energy and total mass of traction lead-acid batteries developed and developed in China is 13.5 kWh. The total mass of aluminum air batteries with the same energy is only 45 kg, which is 12 <UNK> of the quality of lead-acid batteries. As the battery quality is greatly reduced, the vehicle's preparation quality is also reduced, which can increase the vehicle's loading energy or extend the mileage.

3, aluminum is not toxic and dangerous

Aluminium will not cause harm to the human body and can be recycled for recycling without polluting the environment. Aluminum is rich in raw materials and already has a large-scale aluminum smelter, which has a low production cost. Aluminum recycling is convenient and the cost of recycling is also low. Moreover, aluminum electrode replacement can be used to solve the problem of slow charging aluminum air batteries.

Just as everything has its strengths and weaknesses, so does the aluminum air battery.

Although it contains high specific energy, the specific power is low, the charging and discharge speed is relatively slow, the voltage is lagging, and the self-discharge rate is large. It is necessary to use a thermal management system to prevent overheat when the aluminum air battery is working.

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