Magnetic Measurements as a Sensitive Tool for Studying Dehydrogenation Processes in Hydrogen Storage Materials

5 páginas, 4 figuras.-- et al.Magnetic characterization is shown to be a highly effective, nondestructive, and commonly available method to accurately assess dehydrogenation temperatures and further clarify the reaction mechanisms during dehydrogenation in systems with superconducting or ferromagnetic constituents. As examples, the dehydrogenation temperature of NaBH4 in a nanostructured NaBH4/MgH2 system and the dehydrogenation process of nanostructured Mg2CoH5, based on the superconducting and ferromagnetic properties of MgB2 and Co, respectively, are determined.This work has been partially financed by the 2009-SGR-1292 and MAT2007-66302-C02 research projects. E.M. thanks the Fund for Scientific ResearchsFlanders (FWO) for financial support and V. Vanhooren, S. Enzo, and M. Baricco for fruitful discussions. S.G. is indebted to the European Commission for the support through the MRTNContract “Complex Solid State Reactions for Energy Efficient Hydrogen Storage” (MRTN-CT-2006-035366). A.L.-O. acknowledges his FPI fellowship from the Spanish MICINN, cofinanced by the ESF. M.D.B. was partially supported by an ICREA ACADEMIA award.Peer reviewe