Study on the Effects of Wet Ball Milling and Boron Nitride Additive on Li-N-H Hydrogen Storage System

In this work, wet ball milling with Tetrahydrofuran (THF) was applied to activate the LiNH2+1.2LiH hydrogen storage system. Based on this, the effect of boron nitride additives was studied. Compared to dry ball milled samples, the wet ball milled material showed similar particle and crystallite size. While an additional 24 hours wet ball milling with fine milling ball process reduced the particle size obviously. The recyclability of this hydrogen storage system was enhanced significantly by an additive of 3 wt. % boron nitride, while particle and crystallite size were not influenced after milling.