Fig. 2: Morphology and elemental distribution of the trimetallic oxide.

a As-produced coating with an initial Mo content of 14.8 At%. b After 15 CV cycles and only 4.4 At% Mo remaining. c After the stability test (1000 CVs + 24 h CA) with only 0.3 At% of Mo was left. d EDX elemental mapping of the as-produced trimetallic oxide.