| 초록 |
Currently, due to the excessive use of fossil fuels worldwide, major energy resource depletion and environmental problems are faced. Major energy-consuming countries are longing for new energy in consideration of this. Hydrogen is a zero-emission and high-efficiency energy carrier that is easy to produce and convert into other energy forms. Therefore, hydrogen is next-generation energy media prepared for the era of the hydrogen economy, and a variety of studies are conducted in various fields of production, storage, and transport. In particular, in order to improve the low safety of the currently commercialized method and secure high-efficiency energy, many studies on solid-based hydrogen storage methods are being conducted. Among them, Mg and Mg-based materials are lightweight, low-cost materials with high hydrogen storage capacity. However, there are difficulties due to oxidation reactions that reduce hydrogen storage efficiency and high activation energy for the reaction. Several studies are being conducted to solve the problems, Such as adding transition metal catalysts, forming intermetallic compounds, and surface coating. In this study, in order to improve hydriding kinetics, an experiment was carried out on a hydrogen storage composite synthesized by a hydrogen-Induced Mechanical Alloying (HIMA) method by adding a Ti-based intermetallic compound, TiNi catalyst. In addition, Material Life Cycle Assessment (MLCA) was performed to evaluate the resource circularity of the MgHX-TiNi composites. MLCA was conducted through Gabi software, it is based on Eco-Indicator 99' (EI99) and CML 2001 methodology. As a result, TiNi improved the hydriding kinetics of MgHX, and the environmental impact on processes and materials could be analyzed through MLCA. |
