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Open AccessReview

Recent Progress and New Perspectives on Metal Amide and Imide Systems for Solid-State Hydrogen Storage

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International Research Centre in Critical Raw Materials—ICCRAM, Universidad de Burgos, Plaza Misael Banuelos s/n, 09001 Burgos, Spain
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Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany
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Department of Mechanical Engineering, Helmut Schmidt University, Holstenhofweg 85, 22043 Hamburg, Germany
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Pavia Hydrogen Lab, C.S.G.I. & Department of Chemistry, Physical-Chemistry Section, University of Pavia, Viale Taramelli, 16, 27100 Pavia, Italy
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Centro Atómico Bariloche (CNEA) e Instituto Balseiro (UNCuyo), Bariloche, Río Negro R8402AGP, Argentina
*
Authors to whom correspondence should be addressed.
Energies 2018, 11(5), 1027; https://doi.org/10.3390/en11051027
Received: 28 February 2018 / Revised: 16 April 2018 / Accepted: 19 April 2018 / Published: 24 April 2018
Hydrogen storage in the solid state represents one of the most attractive and challenging ways to supply hydrogen to a proton exchange membrane (PEM) fuel cell. Although in the last 15 years a large variety of material systems have been identified as possible candidates for storing hydrogen, further efforts have to be made in the development of systems which meet the strict targets of the Fuel Cells and Hydrogen Joint Undertaking (FCH JU) and U.S. Department of Energy (DOE). Recent projections indicate that a system possessing: (i) an ideal enthalpy in the range of 20–50 kJ/mol H2, to use the heat produced by PEM fuel cell for providing the energy necessary for desorption; (ii) a gravimetric hydrogen density of 5 wt. % H2 and (iii) fast sorption kinetics below 110 °C is strongly recommended. Among the known hydrogen storage materials, amide and imide-based mixtures represent the most promising class of compounds for on-board applications; however, some barriers still have to be overcome before considering this class of material mature for real applications. In this review, the most relevant progresses made in the recent years as well as the kinetic and thermodynamic properties, experimentally measured for the most promising systems, are reported and properly discussed. View Full-Text
Keywords: hydrogen storage materials; metal amides; thermodynamics and kinetics hydrogen storage materials; metal amides; thermodynamics and kinetics
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MDPI and ACS Style

Garroni, S.; Santoru, A.; Cao, H.; Dornheim, M.; Klassen, T.; Milanese, C.; Gennari, F.; Pistidda, C. Recent Progress and New Perspectives on Metal Amide and Imide Systems for Solid-State Hydrogen Storage. Energies 2018, 11, 1027.

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