상세정보
학술지
Thermally Modulated Multilayered Graphene Oxide for Hydrogen Storage
- 발행일
- 201201
- 출처
- Physical Chemistry Chemical Physics, v.14 no.4, pp.1480-1484
- ISSN
- 1463-9076
- 출판사
- Royal Society of Chemistry (RSC)
- 협약과제
- 11MC1500, 차세대 IT기반 기술사업화 기반조성, 장원익
- 초록
- 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 제안 키워드
- 77 K, First-principles calculations, Functional group, GO sheets, Graphene oxide(GOS), Graphite materials, H 2, Thermal annealing, high-pressure, hydrogen storage material, interlayer distance