Alkali metal alloy anodes are considered possible candidates for the next-generation battery system beyond Li-ion batteries. Unlike bare alkali metal electrodes, the formation of dendrites is prevented due to the electrostatic shield mechanism . In a first study, Zhang et al. presented a dendrite-free metal-oxygen battery featuring a Li-Na alloy anode 105 . However, the electrochemistry of the alloy anode is still poorly understood and further studies in this area are required 106 .