A dataset of linear sweep voltammetry curves for the acidic oxygenreduction reaction on carbon-supported catalysts in a sulfuricacid medium

All electrochemical tests were conducted in O2-saturated 0.5 mol L-1 H2SO4 at controlled rotation speeds using a rotatingdisk electrode. The dataset contains 120 validated entries from both non-preciousmetal (MNC) and platinum metal (Pt-MC) catalysts, including original LSV curves and extracted performance parameters such as onset potential, half-wave potential, and limiting current densities at different rotation speeds.

Data processing involved potential conversion to the reversible hydrogen electrode (RHE) scale, background subtraction, outlier removal, and reproducibility checks with defined quality control thresholds (relative standard deviation, RSD, ≤ 2% for E1/2,≤ 5% for limiting current). The standardized collection serves as a reliable benchmark for catalyst performance comparison, supports kinetic andmass transport analysis, and provides a structured data source for machine learning applications in electrocatalysis.