Structural transitions induced by hydrogen absorption in metallic hydrides
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Michel J. Latroche
Abstract
Intermetallic compounds are able to store reversibly large amount of hydrogen. The hydride formation usually takes place through a two-phase domain for which an equilibrium plateau is observed between the metallic phase and its hydride. Such phase transformation induces important structural changes such as volume expansion (either isotropic and anisotropic), symmetry lowering, hydrogen ordering and phase transitions. In some cases, change of the electronic structure, from metallic to iono-covalent state, is reported. Finally, amorphization can occur leading to disproportionation of the parent compound. In this overview we give some examples of these different behaviors to illustrate the fascinating structural properties of these materials that are of potential interest from the fundamental point of view and for practical applications like energy storage either by solid-gas or electrochemical routes.
© by Oldenbourg Wissenschaftsverlag, Thiais, Germany
Articles in the same Issue
- Editorial: Hydrogen Storage Materials
- Solving crystal structures of metal and chemical hydrides
- Pair Distribution Functions and Reverse Monte Carlo modelling of disordered metal hydrides
- Coexistence of hydrogen and polyanions in multinary main group element hydrides
- Structures of aluminium-based light weight hydrides
- Light metal borohydrides: crystal structures and beyond
- The structural properties of amides and imides as hydrogen storage materials
- Structural transitions induced by hydrogen absorption in metallic hydrides
- Crystal chemistry and metal-hydrogen bonding in anisotropic and interstitial hydrides of intermetallics of rare earth (R) and transition metals (T), RT3 and R2T7
- Hydrogen induced site depopulation in the LaMgNi4-hydrogen system
- The nature of deuterium arrangements in YD3 and other rare-earth trideuterides
- The crystal structure of α-MgD2 under high pressure by neutron powder diffraction
Articles in the same Issue
- Editorial: Hydrogen Storage Materials
- Solving crystal structures of metal and chemical hydrides
- Pair Distribution Functions and Reverse Monte Carlo modelling of disordered metal hydrides
- Coexistence of hydrogen and polyanions in multinary main group element hydrides
- Structures of aluminium-based light weight hydrides
- Light metal borohydrides: crystal structures and beyond
- The structural properties of amides and imides as hydrogen storage materials
- Structural transitions induced by hydrogen absorption in metallic hydrides
- Crystal chemistry and metal-hydrogen bonding in anisotropic and interstitial hydrides of intermetallics of rare earth (R) and transition metals (T), RT3 and R2T7
- Hydrogen induced site depopulation in the LaMgNi4-hydrogen system
- The nature of deuterium arrangements in YD3 and other rare-earth trideuterides
- The crystal structure of α-MgD2 under high pressure by neutron powder diffraction
