| 초록 |
In the era of climate crisis, hydrogen is a promising energy carrier for replacing fossil fuels. It has distinct advantages of high energy density and environmental-benign feature compared to other chemical fuels, while the safe and efficient hydrogen storage system still remains an unresolved problem. Such issues can be resolved via the development of material-based system with metal and complex hydrides (e.g. MgH2); however, its practical use has been limited due to thermodynamic and kinetic barriers associated with hydrogen sorption. Among a variety of strategies to overcome those difficulties, a formation of nanocomposites has achieved some desired results, controlling reaction thermodynamic and kinetic properties of metal hydrides in the composite due to an interaction with scaffolds or additives at the interface. In this talk, the role of interfacial interaction in the nanocomposite of metal hydrides and carbon materials on hydrogen storage is presented. The well-defined interface leads to the noticeable enhancement of reaction kinetics and thermodynamics related to hydrogen sorption of the nanocomposites, controlling the operating temperature and altering reaction pathways. |
