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Thermally Modulated Multilayered Graphene Oxide for Hydrogen Storage
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- Authors
- Byung Hoon Kim, Won Gi Hong, Han Young Yu, Young-Kyu Han, Sang Moon Lee, Sung Jin Chang, Hoi Ri Moon, Yongseok Jun, Hae Jin Kim
- Issue Date
- 2012-01
- Citation
- Physical Chemistry Chemical Physics, v.14, no.4, pp.1480-1484
- ISSN
- 1463-9076
- Publisher
- Royal Society of Chemistry (RSC)
- Language
- English
- Type
- Journal Article
- Abstract
- We have obtained high pressure H2 isotherms with respect to the interlayer distance of multilayered graphene oxide (GO) modulated by thermal annealing. The maximum storage capacity is 4.8 (0.5) wt% at 77 K (298 K) and at 9.0 MPa pressure. We found the optimum GO interlayer distance for maximum H 2 uptake at 6.5 횇, similar to the predicted distances from first-principles calculations for graphite materials. Our results reveal that multilayered GO can be a practical material of choice to allow the use of graphene as a hydrogen storage material, provided that only small amounts of O and OH functional groups exist as spacers on GO sheets. © 2012 the Owner Societies.
- KSP Keywords
- 77 K, First-principles calculations, Functional groups, GO sheets, Graphene oxide, Graphite materials, H 2, Thermal annealing, high pressure, hydrogen storage material, interlayer distance