Fig. 4: Changes in elemental composition after the electrochemical stress test at various pH. | Communications Engineering

Fig. 4: Changes in elemental composition after the electrochemical stress test at various pH.

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

Fig. 4

W/Mo and Sb/Sn atomic ratio evaluated by EDX (black line), and XPS (blue line) for MO, MO@pH2, MO@pH1, and MO@pH0. The Ovac/Olattice ratio (red line) was obtained from the O 1 s high-resolution XPS core-level spectra in Fig. S5. The error bars represent the standard deviation of duplicate samples.

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