X-ray diffraction studies have been performed on Li-based complex hydrides after multiple hydriding/dehydriding pressure cycles. The effects of pressure cycling are important for longterm reliability of Li-based hydrides. Commercial grade hydrogen containing low-level impurities (O2, H2O, CO/CO2) was used for this study to show the effect of cycling on hydrogen storage capacities. Equilibrium i...

The first fully structurally characterized ternary europium palladium hydrides (deuterides) are reported. The most Eu rich compound is Eu(2)PdD(4). Its beta-K(2)SO(4) type structure (space group Pnma, a = 749.47(1) pm, b = 543.34(1) pm, c = 947.91(1) pm, Z = 4) contains tetrahedral 18-electron [PdD(4)](4)(-) complex anions and divalent Eu cations. The compound is presumably nonmetallic and show...

There are extensive efforts underway worldwide to develop inexpensive and practical hydrogen storage materials for the implementation of a hydrogen-based energy economy. Metal hydrides are leading candidates for hydrogen storage applications because they are solid at room temperature and release hydrogen on demand when heated. HSM systems Inc. has developed a practical hydrogen storage system i...

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