Data from research on electrocatalysts for seawater splitting

The data set contains the results of studies on the electrocatalytic properties of battery waste towards water splitting and seawater splitting. The results show that the black carbon mass left over from hydrometallurgical metal recovery is an efficient and stable electrocatalyst for the oxygen evolution reaction (OER) performed in alkaline media and in simulated seawater.Electrochemical tests revealed that BAT 1 reached an OER overpotential only 14 mV and 95 mV higher than the benchmark RuO₂ catalyst for water and seawater splitting, respectively. These findings highlight the potential of waste-derived, low-cost electrocatalysts in advancing the water splitting economy.