Fig. 3: Cyclic voltammetry (CV) curves and ORR activity trends under potential cycles (PC) loading of the vacuum-synthesised Pt/Cr-Mn-Fe-Co-Ni/Pt(hkl). | Nature Communications

Fig. 3: Cyclic voltammetry (CV) curves and ORR activity trends under potential cycles (PC) loading of the vacuum-synthesised Pt/Cr-Mn-Fe-Co-Ni/Pt(hkl).

From: Experimental study platform for electrocatalysis of atomic-level controlled high-entropy alloy surfaces

Fig. 3

a–f CV curves collected at 0.05–1.0 V vs. reversible hydrogen electrode (RHE) potential range of the as-synthesised (blue) and degraded (grey) states of Pt/Cr-Mn-Fe-Co-Ni/Pt(111), (110) and (100), respectively. Corresponding CVs of the Pt(hkl) substrates are indicated by the dashed lines. a, c, e ORR activity trends recorded under PC-loading (up to 5000 cycles at 0.6–1.0 V) of Pt/Cr-Mn-Fe-Co-Ni/Pt(111), (110) and (100), respectively. b, d, f Insets in b: Illustration of a potential cycle protocol for the accelerated degradation test used in this study. (https://www.nedo.go.jp/library/PEFC_CELL_Protocol.html, R−2 III−2−2) Source data provided for all panels.

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