Despite high interest in compact and safe storage of hydrogen the solid-state hydride form, design alloys that can reversibly quickly store at room temperature under pressures close to atmospheric pressure is a long-lasting challenge. In this study, first-principles calculations are combined with experiments develop high-entropy (HEAs) for room-temperature storage. TixZr2-xCrMnFeNi (x = 0.4-1.6...

Hydrogen absorption performances of LaNi5 alloy are sensitive to the surface reactions with poisonous gases, such as oxygen, readily forming oxides/hydroxides. In this study, we report studies on hydrogen behaviour AB5-type storage alloys, formed by LaNi(5–x)Snx (X = 0.2) followed electroless Pd deposition. The uncoated and Pd-coated materials were characterized using scanning electron microsco...

A safe and efficient method for storing hydrogen is solid state storage through a chemical reaction in metal hydrides. A good amount of research has been conducted on hydrogenation properties of metal hydrides and possible methods to improve them. Background research shows that heat transfer is one of the reaction rate controlling parameters in a metal hydride hydrogen storage system. Consideri...

In recent years, global warming issues due to the increase in carbon dioxide (CO2) concentration triggered by use of fossil fuels have become even more serious. Therefore, methanation CO2 has been considered, e.g. Sabatier reaction. This reaction requires catalysts such as Ni, and development capable producing methane with high efficiency is required. our previous studies, it reported that poss...