Abstract
Complex transition-metal hydrides provide new opportunities for hydrogen storage. Their hydrogen-to-metal ratios reach values of up to H/M = 4.5 (BaReH9) and thus surpass the hydrogen-to-carbon ratios of hydrocarbons (methane: H/C = 4); their hydrogen-volume efficiencies exceed that of liquid hydrogen by a factor of up to two (Mg2FeH6), their weight efficiencies exceed 5% (Mg3MnH7), and their hydrogen dissociation temperatures under 1 bar hydrogen pressure range from ca. 100° (NaKReH9) to 400° (CaMgNiH4). Their crystal chemistry is extremely rich and shows a large inventory of transition-metal hydrido complexes that often conform to the 18-electron rule. New synthetic methods are likely to yield further members of this class of materials.
Keywords
HydrogenHydrogen storageTransition metalDissociation (chemistry)MetalMethaneHydrideChemistryInorganic chemistryBar (unit)Carbon fibersCryo-adsorptionMaterials sciencePhysical chemistryOrganic chemistryCatalysis
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Publication Info
- Year
- 1998
- Type
- article
- Volume
- 52
- Issue
- 10
- Pages
- 613-613
- Citations
- 122
- Access
- Closed
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Cite This
K. Yvon
(1998).
Complex Transition-Metal Hydrides.
CHIMIA International Journal for Chemistry
, 52
(10)
, 613-613.
https://doi.org/10.2533/chimia.1998.613
Identifiers
- DOI
- 10.2533/chimia.1998.613