Fuel cell dynamics (IMAGE) University of Texas at Austin Caption Figuring out the density and locational dynamics of iron atoms unlocks a level of efficiency in the fuel cell oxidation reaction never before realized. Credit University of Texas at Austin / Cockrell School of Engineering Usage Restrictions None License Original 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.