Ultrathin Oxide Layer Coats Graphene-Wrapped Nanocrystal (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption A new study explains how an ultrathin oxide layer (oxygen atoms shown in red) coating graphene-wrapped magnesium nanoparticles (gold) still allows in hydrogen atoms (blue) for hydrogen storage applications. Credit Berkeley Lab Usage Restrictions None 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.