Aluminium–air batteries produce electricity from the reaction of oxygen in the air with aluminium. They have high-energy density and do not require charging infrastructure, and are seen as a potential fuel source for long-haul electric transport.
One of the key downsides of aluminium-air batteries is that they cannot be recharged like lithium-ion batteries.
The aluminium plate in an aluminium-air battery is converted into aluminium trihydroxide over time and that aluminium can be reclaimed from aluminium trihydroxide or even traded directly for industrial uses.
Aluminium-air based batteries are also expected to be significantly cheaper than lithium-ion batteries.
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