Thermally modulated multilayered graphene oxide for hydrogen storage
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- Thermally modulated multilayered graphene oxide for hydrogen storage
- Kim, Byung Hoon; Hong, Won G.; Yu, Han Young; Han, Young-Kyu; Lee, Sang Moon; Chang, Sung Jin; Moon, Hoi Ri; Jun, Yongseok; Kim, Hae Jin
- GRAPHITE OXIDE; CARBON; PAPER; PHYSISORPTION; SPECTROSCOPY; REDUCTION
- Issue Date
- ROYAL SOC CHEMISTRY
- PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.14, no.4, pp.1480 - 1484
- We have obtained high pressure H(2) 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 H2 uptake at 6.5 angstrom, 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.
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