Polyhydrides offer intriguing perspectives as high-temperature superconductors. Here we report the high-pressure synthesis of a series lanthanum-yttrium ternary hydrides: cubic hexahydride $(La,Y)H_{6}$ with critical temperature $T_{C}$ = 237 +/- 5 K and decahydrides $(La,Y)H_{10}$ maximum ~${253 K}$ an extrapolated upper magnetic field $B_{C2(0)}$ up to ${135 T}$ at 183 GPa. This is one first ...

Pristine complex quaternary hydride (LiBH4/2LiNH2) and its destabilized counterpart (LiBH4/2LiNH2/nanoMgH2) have recently shown promising reversible hydrogen storage capacity under moderate operating conditions. The destabilization of complex hydride via nanocrystalline MgH2 apparently lowers the thermodynamic heat values and thus enhances the reversible hydrogen storage behavior at moderate te...

Technical Barriers This project addresses the following technical barriers from the Hydrogen Storage section of the Hydrogen, Fuel Cells and Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan: • A. Cost • B. Weight and Volume • D. Durability • E. Refueling Time • M. Hydrogen Capacity and Reversibility • O. Test Protocols and Evaluation Facilities • Q. Th...

We present the first high-resolution (R ≈ 31 000) spectra of the cool sdL 2MASS 0532+8246, and what was originally identified as an early-type L subd-warf (sdL) LSR 1610 – 0040. Our work, in combination with contemporaneous work by Cushing and Vacca, makes it clear that the latter object is more probably a mid-M dwarf with an unusual composition that gives it some sub-dwarf spectral features. W...

The diffusion coefficient of palladium varies with hydrogen content due to filling antibonding states and softening lattice modes.

DOE Hydrogen Program FY 2009 Annual Progress Report PIs: Peter Sutter ([email protected]), James Muckerman, Jason Graetz Collaborators: Yves Chabal, Cristian Ciobanu, Eli Sutter Center for Functional Nanomaterials, Chemistry Department, Energy Science & Technology Department, Brookhaven National Laboratory, Upton, NY 11978, Materials Science & Engineering Department, University of Texas at Dallas...