Figure 3: Hydrogen evolution reaction electrocatalytic properties. | Nature Communications

Figure 3: Hydrogen evolution reaction electrocatalytic properties.

From: Local atomic structure modulations activate metal oxide as electrocatalyst for hydrogen evolution in acidic water

Figure 3

(a) Polarization data for the WO2.9 electrodes, along with WO3, Pt/C and glassy carbon for comparison. (b) Tafel plots of the polarization curves of the WO2.9, WO3 and Pt/C. (c) Polarization data for WO2.9 sample sweeps between −0.3 and +0.1 V versus RHE, showing negligible current density loss even after 1,000 CV cycles. (d) Time dependence of current density under static overpotential of −0.1 V. Inset is an enlargement of an area in d. All electrochemical studies were performed in 0.5 M H2SO4 at room temperature.

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