Abstract
Lithium- or potassium-doped carbon nanotubes can absorb ∼20 or ∼14 weight percent of hydrogen at moderate (200° to 400°C) or room temperatures, respectively, under ambient pressure. These values are greater than those of metal hydride and cryoadsorption systems. The hydrogen stored in the lithium- or potassium-doped carbon nanotubes can be released at higher temperatures, and the sorption-desorption cycle can be repeated with little decrease in the sorption capacity. The high hydrogen-uptake capacity of these systems may be derived from the special open-edged, layered structure of the carbon nanotubes made from methane, as well as the catalytic effect of alkali metals.
Keywords
Alkali metalCarbon nanotubeSorptionLithium (medication)DesorptionHydrogenMethaneInorganic chemistryMaterials scienceCarbon fibersPotassiumHydrogen storageCatalysisLithium hydrideChemical engineeringChemistryAdsorptionNanotechnologyIonOrganic chemistryComposite materialIonic bondingComposite numberMetallurgy
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Publication Info
- Year
- 1999
- Type
- article
- Volume
- 285
- Issue
- 5424
- Pages
- 91-93
- Citations
- 1153
- Access
- Closed
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Cite This
Ping Chen,
Xiaojun Wu,
Jianyi Lin
et al.
(1999).
High H <sub>2</sub> Uptake by Alkali-Doped Carbon Nanotubes Under Ambient Pressure and Moderate Temperatures.
Science
, 285
(5424)
, 91-93.
https://doi.org/10.1126/science.285.5424.91
Identifiers
- DOI
- 10.1126/science.285.5424.91