Calcium Amidoborane Hydrogen Storage Materials: Crystal Structures of Decomposition Products

摘要

The safe and convenient storage of molecular hydrogen is a crucial target in the transition to a hydrogen-based energy economy. Among the many different approaches to achieve this end, one is that of chemical storage in ammonia-borane (NH3BH3). This small molecule, with nearly 20 weight % hydrogen content, displays a hydrogen density easily exceeding that of liquid hydrogen. Ammonia-borane eliminates hydrogen by combining protic and hydridic hydrogen atoms, finally culminating in formation of ceramic boron nitride (BN) (Scheme 1).