Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 895, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.162659
Keywords
Hydroborate; Hydrogen storage; Solid electrolyte; Carboranate
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The review covers the research on metal hydroborates as solid hydrogen stores and solid electrolytes over the last twenty years, shifting focus from hydrogen storage to solid electrolytes. Various strategies to overcome the strong covalent bonding of hydrogen in hydroborates and disorder their structures at room temperature for solid electrolytes are discussed. Crystal chemistry and crystallography knowledge play an important role in material design, as highlighted in the cited literature.
The last twenty years of an intense research on metal hydroborates as solid hydrogen stores and solid electrolytes are reviewed. It is shown that from the most promising application in hydrogen storage due to their high gravimetric and volumetric capacities, the focus has moved to solid electrolytes due to high cation mobility in disordered structures with rotating or tumbling anions-hydroborate clusters. Various strategies of overcoming the strong covalent bonding of hydrogen in hydroborates for hydrogen storage and disordering their structures at room temperature for solid electrolytes are discussed. The important role of crystal chemistry and crystallography knowledge in material design can be read in the cited literature. (c) 2021 The Authors. Published by Elsevier B.V. CC_BY_NC_ND_4.0
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