An easy treatment based in carbon layer deposition into aluminium alloys is presented to enhance the
performance of Al-air primary batteries with neutral pH electrolyte. The jellification of aluminate in the
anode surface is described and avoided by the carbon covering. Treated commercial Al alloys namely
Al1085 and Al7475 are tested as anodes achieving specific capacities above 1.2 Ah g1 vs 0.5 Ah g1
without carbon covering. The influence of the binder proportion in the treatment as well as different
carbonaceous materials, Carbon Black, Graphene and Pyrolytic Graphite are evaluated as candidates for
the covering. Current densities of 1e10 mA cm2 are measured and the influence of the alloy explored. A
final battery design of 4 cells in series is presented for discharges with a voltage plateau of 2 V and 1
Wh g1 energy density.