Investigation on the existence of optimum interlayer distance for H 2 uptake using pillared-graphene oxide

Byung Hoon Kim, Won G. Hong, Hoi Ri Moon, Sang Moon Lee, Jung Min Kim, Sunwoo Kang, Yongseok Jun, Hae Jin Kim

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In order to prove the existence of an optimum interlayer distance for H2 uptake, we have obtained H2 isotherms with respect to the interlayer distance of pillared-graphene oxide (GO) at 1.0 bar and 77 K. Interlayer distances of GO were changed by intercalation of three kinds of diaminoalkanes with a different number of carbon atoms (NH2(CH 2)nNH2, n = 2, 6, 10) as pillars and changing the subsequent thermal annealing conditions. We found an optimum GO interlayer distance for maximum H2 uptake at 6.3 similar to the predicted distance from first-principles calculations for graphitic materials, and the value obtained from thermally modulated GO. Our results experimentally corroborate the existence of an optimum interlayer distance and demonstrate the importance of an interlayer distance for the design of materials for H 2 storage.

Original languageEnglish
Pages (from-to)14217-14222
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number19
DOIs
Publication statusPublished - 2012 Oct

Keywords

  • Diaminoalkane
  • Hydrogen storage
  • Optimum interlayer distance
  • Pillared-graphene oxide

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'Investigation on the existence of optimum interlayer distance for H <sub>2</sub> uptake using pillared-graphene oxide'. Together they form a unique fingerprint.

  • Cite this