Size effects on the hydrogen storage properties of nanoscaffoldedLi3BN2H8

Abstract

The use of Li3BN2H8 complex hydride as a practical hydrogen storage material is limited by itshigh desorption temperature and poor reversibility. While certain catalystshave been shown to decrease the dehydrogenation temperature, no significantimprovement in reversibility has been reported thus far. In this study, wedemonstrated that tuning the particle size to the nanometer scale by infiltration intonanoporous carbon scaffolds leads to dramatic improvements in the reversibility ofLi3BN2H8. Possible changes in the dehydrogenation path were also observed in the nanoscaffoldedhydride.