Highly porous carbonaceous material has played an important role in tackling down the present energy and environmental problems due to their many attractive features such as high surface area, thermal and chemical stability, and mass productivity. Especially, the commanding characteristics of the highly porous carbons such as light weight, fast adsorption/desorption kinetics, and high surface area have attracted extensive attention in the "hydrogen storage" application which is a main bottleneck for the realization of on-board hydrogen fuel cell vehicles. We herein explored a preparation of porous carbons with hierarchical pore structures by carbonizing metal organic framework (MOF) (denoted as MDC) and showed it as a promising hydrogen storage adsorbent. This new class porous carbon can be fabricated via a simple heat treatment of highly crystalline MOFs without complicated process and environmental burden. The obtained MDC showed well-faceted cubic micrometer scale-particles with hierarchical ultramicro-, meso-, and macro-porosities. With this unique porous structure, the MDCs have demonstrated that high SSA and high pore volume have a synergistic effect on the enhancement of the hydrogen storage capacity of an adsorbent.
展开▼
