There are millions of fishing boats in our oceans, consuming 50Bn liters of fuel annually. Over 75% are concentrated around South and Southeast Asia, of which, the large majority have a gross tonnage below 20t, and are normally below 12m in length.
The Al-air batteries are attractive candidates as a power source for electric vessels & standby power, with higher energy density, significantly greater than that of the lithium-ion batteries. Al–air batteries hold great promise also for large standby energy applications due to their low cost and high specific capacity.
Because: Aluminium–Air batteries (Al–air) produce electricity from the reaction of oxygen in the air with aluminium; they have one of the highest energy densities of all batteries: eight times lighter & four times smaller than Li-Ion.