Fig. 4: Electrocatalytic OER properties of electrocatalysts. | Nature Communications

Fig. 4: Electrocatalytic OER properties of electrocatalysts.

From: A universal approach for thin high-entropy oxides regulated by Ga2O3 layers for oxygen evolution reaction

Fig. 4

a, b Linear sweep voltammetry (LSV) curves and Tafel slopes of CP/Ga2O3@HEO, CP/Ga2O3, CP/HEO and RuO2 with a scan rate of 5ā€‰mV/s. c Overpotentials of CP/Ga2O3@HEO, CP/Ga2O3, CP/HEO and RuO2 at 10 and 100ā€‰mAā€‰cmāˆ’2. d Double layer capacitance (Cdl) of CP/Ga2O3@HEO, CP/Ga2O3, and CP/HEO. e Electrochemical active surface area (ECSA) and turnover frequency (TOF) at an overpotential of 350ā€‰mV of CP/Ga2O3@HEO, CP/Ga2O3, and CP/HEO. f OER free-energy landscape of CP/Ga2O3@HEO and CP/HEO. All the measurements were tested in 1.0ā€‰M KOH solution as the electrolyte (pHā€‰=ā€‰13.6ā€‰Ā±ā€‰0.2) at room temperature without iR correction. The catalyst loading varies depending on the parameters used for liquid gallium electroplating. Source data are provided as a Source Data file.

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