Metal–air electrochemical cell

The types of metal–air batteries have different capacities

A metal–air electrochemical cell is an electrochemical cell that uses an anode made from pure metal and an external cathode of ambient air, typically with an aqueous electrolyte.^[1][2]

Types

The Li–air battery discharge reaction between Li and oxygen Li₂O, according to 4Li + O₂ → 2Li₂O, has an open-circuit voltage of 2.91 V and a theoretical specific energy of 5210 Wh/kg. Since oxygen is not stored in the battery, the theoretical specific energy excluding oxygen is 11140 Wh/kg (40.1 MJ/kg). Compare this to the figure of 44 MJ/kg for gasoline (see petrol energy content).

References

v t e Galvanic cells Types Voltaic pile Battery Flow battery Trough battery Concentration cell Fuel cell Primary cell (non-rechargable) Alkaline Aluminium–air Bunsen Chromic acid Clark Daniell Dry Edison-Lalande Grove Leclanché Lithium Mercury Nickel oxyhydroxide Silicon–air Silver oxide Weston Zamboni Zinc–air Zinc–carbon Secondary cell (rechargeable) Automotive Lead–acid gel / VRLA Lithium–air Lithium–ion Lithium polymer Lithium iron phosphate Lithium–sulfur Lithium titanate Nanowire Nickel–cadmium Nickel–hydrogen Nickel–iron Nickel–lithium Nickel–metal hydride Nickel–zinc Polysulfide bromide Potassium-ion Rechargeable alkaline Sodium-ion Sodium–sulfur Vanadium redox Zinc–bromine Zinc–cerium Cell parts Anode Binder Catalyst Cathode Electrolyte Half-cell Ions Salt bridge Semipermeable membrane