Hydrogen Sorption of Transition Metal Modified BCN Compounds

Abstract

Hydrogen storage behaviors of BCN compounds modified with transition metals were studied. The BCN compounds, which had graphite-like layered structures composed of boron, carbon and nitrogen, were prepared by two different methods employing melamine and boric acid. The maximum hydrogen content at 77 K under 0.8 MPa of hydrogen was 1.403 mass% for Pt-Fe modified BCN prepared via melamine formaldehyde resin with specific surface area (SSA) of 441.9 m2g-1. That content was higher than the predicted physisorption limit. The enhancement of the hydrogen capacity would be due to the spillover phenomenon caused by supported metals and substituted heteroatoms.