The deposition and dissolution of sodium superoxide (NaO) was investigated by atomic force microscopy. Rectangular prisms consisting of 8 smaller sub-structures grew from NaO platelets, when discharged in 0.5 M NaClO, diethylene glycol dimethyl ether on highly ordered pyrolytic graphite. During oxidation the 8 sub-structures are conserved. Ring-like structures of NaCO of 200 nm diameter remain at the end of oxidation.
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