Nano-Engineered Spacing in Graphene Sheets for Hydrogen Storage

Zhong Jin, Wei Lu, Kevin J. Oneill, Philip A. Parilla, Lin J. Simpson, Carter Kittrell, James M. Tour

Research output: Contribution to journalArticlepeer-review

70 Scopus Citations

Abstract

Thermally exfoliated graphene (TEG) sheets were functionalized and cross-linked by in situ diazonium reactions in super acids. The degree of functionalization was monitored by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Compared with the original TEG material, the functionalized TEGs show improved hydrogen uptake capacities, which could be attributed to the proppant effect of the grafted functional groups and charge transfer between the sulfonic addends and the graphene sheets. This method provides a possible route to further increase the hydrogen storage capacity of graphene materials by cross-linking and nanospace engineering.

Original languageAmerican English
Pages (from-to)923-925
Number of pages3
JournalChemistry of Materials
Volume23
Issue number4
DOIs
StatePublished - 2011

NREL Publication Number

  • NREL/JA-5200-51215

Keywords

  • hydrogen storage

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