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Published on: November 30, 2022
Metal borohydrides and derivatives - synthesis, structure and properties
Mark Paskevicius1, Lars H Jepsen1, Pascal Schouwink2
1Center for Materials Crystallography, Interdisciplinary Nanoscience Center (iNANO), and Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark. trj@chem.au.dk.
Metal borohydrides offer high hydrogen density for energy storage and novel properties for phosphors and magnetic refrigeration. Research reveals trends in their composition, structure, and thermal behavior, guiding the design of new functional materials.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Energy Storage
Background:
- Metal borohydrides (MBH4) exhibit diverse chemistry, structural flexibility, and tunable properties.
- Increasing interest in MBH4 for energy storage due to high hydrogen density and potential as solid-state ion conductors.
- Emerging applications in lanthanide-bearing borohydrides for solid-state phosphors and magnetic refrigeration.
Purpose of the Study:
- To review new synthetic strategies for metal borohydrides.
- To explore structural, physical, and chemical properties of metal borohydrides.
- To identify trends correlating composition, structure, bonding, and thermal properties for rational material design.
Main Methods:
- Review of recent synthetic methodologies for metal borohydrides.
- Analysis of structural characterization data for various metal borohydrides.
- Compilation and correlation of physical and chemical property data.
Main Results:
- Discovery of new classes of metal borohydride derivatives, including anion-substituted and molecule-modified compounds.
- Identification of key trends in composition-structure-property relationships.
- Demonstration of the potential for discovering novel metal borohydrides with tailored functionalities.
Conclusions:
- Metal borohydrides possess significant potential for advanced functional materials, particularly in energy storage and magnetic applications.
- Understanding established trends facilitates the rational design of new metal borohydrides with specific properties.
- Further exploration of light element combinations promises complex hydrides with exceptional compositional and structural diversity.
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