Fig. 2
From: Micro aluminum-air batteries for extended operational duration of small-scale quadrotors
Schematic of the electrochemical mechanisms taking place in aqueous-electrolyte AABs. In the main reaction, oxygen is reduced at the cathode and Al is oxidized at the anode, forcing current through the external circuit. In the competing corrosion reaction, water is reduced to hydrogen and Al is oxidized without external current flow.
