hydrogenation forms a mixture of lithium amide and hydride (light blue) as an outer shell around a lithium nitride particle (dark blue) nanoconfined in carbon. nanoconfinement suppresses all other intermediate phases to prevent interface formation, which has the effect of dramatically improving the hydrogen storage performance. credit: lawrence livermore national laboratorylawrence livermore scientists have collaborated with an interdisciplinary team of researchers including colleagues from sandia national laboratories to develop an efficient hydrogen storage system that could be a boon for hydrogen powered vehicles. hydrogen is an excellent energy carrier, but the development of lightweight solid-state materials for compact, low-pressure storage is a huge challenge.complex metal hydrides are a promising class of hydrogen storage materials, but their viability is usually limited by slow hydrogen uptake and release. nanoconfinement—infiltrating the metal hydride within a matrix of...