High Specific Capacity and Energy

The theoretical specific capacity and energy of a battery are usually based on the overall cell reaction, i.e. the active components of the anode and cathode alone. In the case of metal-air batteries, because the oxygen is absorbed from the air (as in a fuel cell), some authors calculated the theoretical specific capacity and energy 

Although different assumptions have been made to calculate the specific capacities and energies, the values for metal-air batteries are usually much higher 

Metal/02 couple Specific capacity based on metal alone (Ahg- ) Theoretical Practical voltage voltage (V) (V) Specific energy based on metal alone (Whkg- ) Specific Specific energy energy based on based on metal and all reaction reactants H2O (Wh kg ) (aqueous only) (Whkg- )  

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