Graph depicting nickel foam (FeSnCo0.2SxOy/NF) bifunctional activity (IMAGE) Tsinghua University Press Caption The target of the study, FeSnCo0.2SxOy/NF (green line), requires less voltage to induce oxygen evolution reactions (OER) and hydrogen evolution reactions (HER) than IrO2||Pt/C (red line) Credit Jinqi Guan, Jilin University Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.