Hydrogen storage properties of TiMn2-based alloys |
| |
Authors: | Bin-Hong Liu Dong-Myung Kim Ki-Young Lee Jai-Young Lee |
| |
Affiliation: | Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Kusong-dong 373-1, Yusung-gu, Tacjon 305-701, South Korea |
| |
Abstract: | Several TiMn2-based C14 Laves phase alloys were prepared and their hydrogen storage properties studied in order to develop suitable materials for hydrogen storage tank or hydride heat pump applications. It was observed that the plateau characteristic of the stoichiometric alloy AB, was better than that of the non-stoichiometric one. The plateau pressure was effectively decreased by the partial substitution of Zr for Ti, while the slope was increased. The substitution effects of other transition elements, such as Cr, V, Cu, Fe, Ni for Mn, were also examined. It was found that Cr was suitable for decreasing the hysteresis, Cu could flatten the plateau with decreasing storage capacity, and V could effectively lower the plateau pressure without decreasing the storage capacity. The hydriding properties were found to be related to the lattice structures. Considering a careful balance of the substitution effects of the alloying elements, it was found that Ti0.85Zr0.15MnCr0.8V0.1Cu0.1 alloy had very good plateau characteristics with considerably small hysteresis and high storage capacity. |
| |
Keywords: | Metal hydrides Hydrogen sorption Hydrogen storage Pressure-composition isotherms |
本文献已被 ScienceDirect 等数据库收录! |
|