Principle of aluminum air battery
Aluminum air battery chemical reaction with zinc air battery, aluminum air battery with high purity aluminum Al (al 99.99%) as anode and oxygen as cathode, with potassium hydroxide (KOH) or sodium hydroxide (NaOH) aqueous solution as electrolyte. Aluminum takes in oxygen from the air and produces a chemical reaction when the battery is discharged.
2, aluminum air battery advantages and disadvantages
Aluminum air battery is mainly reflected in the following aspects:
The specific energy of aluminum air battery is up to 8100Wh/kg;
Light weight, the same energy of aluminum air battery is only 12% of the total quality of lead-acid batteries;
Non toxic hazards, recycling can be recycled;
The aluminum rich raw materials.
Aluminum air battery disadvantage is also obvious:
It is a kind of chemical reaction device which can release electric energy, and can not be recharged repeatedly;
Although the aluminum air battery contains high specific energy, the specific power is lower;
The charging and discharging speed is slow, the voltage is delayed, and the self discharge rate is large;
The need to adopt a thermal management system to prevent overheating of the aluminum air battery.
The advantages and disadvantages of aluminum air batteries compared with today's lithium-ion batteries are shown in the following table. compared with lithium ion batteries, like , aluminum ar batteries have much higher energy density,