Unconventional Approaches to Hydrogen Sorption Reactions: Non-Thermal and Non-Straightforward Thermally Driven Methods |
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Authors: | Jose-Ramón Ares Roman Nevshupa Esmeralda Muñoz-Cortés Carlos Sánchez Fabrice Leardini Isabel-J. Ferrer Vo Minh Huy Tran Francois Aguey-Zinsou Jose-Francisco Fernández |
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Affiliation: | 1. MIRE group-Grupo de Física de Materiales de Interés en Energías Renovables Departamento de Física de Materiales, M-4 Facultad de Ciencias;2. C/Tomás y Valiente 7, Universidad Autónoma de Madrid (UAM), Cantoblanco, 28049. Madrid, Spain;3. Spanish National Research Council, “Eduardo Torroja” Institute (IETCC-CSIC), C/Serrano Galvache 4, Madrid, 28033 Spain;4. C/Tomás y Valiente 7, Universidad Autónoma de Madrid (UAM), Cantoblanco, 28049. Madrid, Spain Spanish National Research Council, “Eduardo Torroja” Institute (IETCC-CSIC), C/Serrano Galvache 4, Madrid, 28033 Spain;5. MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052 Australia |
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Abstract: | In the last decades, a broad family of hydrides have attracted attention as prospective hydrogen storage materials of very high gravimetric and volumetric capacity, fast H2-sorption kinetics, environmental friendliness and economical affordability. However, constraints due to their high activation energies of the different H2-sorption steps and the Gibbs energy of their reaction with H2 has led to the need of high thermal energy to drive H2 uptake and release. High heat leads to significant degradation effects (recrystallization, phase segregation, nanoparticles agglomeration…) of the hydrides. In this context, this short review aims to summarize alternative non-thermal methods and non-straightforward thermally driven methods to overcome the previous constraints. The phenomenology lying behind these methods, i. e. tribological activation, sonication, and electromagnetic radiation, and the effect of these processes on hydrogen sorption properties of hydrides are described. These non-usual approaches could boost the capability of the next generation of solid-hydride materials for hydrogen conversion in energy sector, in mobile devices and as hydrogen reservoirs. |
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Keywords: | electrochemistry energy conversion hydrogen storage sonication tribochemistry |
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