Schematic depiction of a fuel cell (IMAGE) Fritz Haber Institute of the Max Planck Society Caption Schematic depiction of a fuel cell and the electrochemical processes studied. Credit © FHI Usage Restrictions © FHI License Licensed content 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.