Fig. 5: Changes in valence states and composition after the electrochemical stress test at pH = 0. | Communications Engineering

Fig. 5: Changes in valence states and composition after the electrochemical stress test at pH = 0.

From: A Quaternary mixed oxide protective scaffold for ruthenium during oxygen evolution reaction in acidic media

Fig. 5

a High resolution XPS core-level spectra of Sb 3d/O 1 s, Sn 3d, Mo 3d, and W 4 f after the 500 CV test at different pH in the electrolyte, pH = 0 (open squares), pH = 1 (open circles), and pH = 2 (open triangles). b Schematic representation of the change in the MO composition after the electrochemical stress test at pH = 0.

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