Enhanced binding energy and slow kinetics of H2 in boron-substituted graphitic carbon

Alfred Kleinhammes, Robert J. Anderson, Qian Chen, Youmi Jeong, Tze-chiang Chung, Yue Wu

Research output: Contribution to journalArticle

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Abstract

H2 binding energy in disordered boron-substituted graphitic carbon was investigated by nuclear magnetic resonance equipped with in situ high pressure hydrogen loading. On the basis of selective adsorption isotherm measurements, a significantly enhanced H2 binding energy of 11.4 kJ/mol was observed in such boronsubstituted carbon, consistent with theoretical predictions. In support of the observed high binding energy at room temperature, H2 diffusion is shown to be slow at 100 K, preventing H2 from accessing the nanopores at low temperatures.

Original languageEnglish (US)
Pages (from-to)13705-13708
Number of pages4
JournalJournal of Physical Chemistry C
Volume114
Issue number32
DOIs
StatePublished - Aug 19 2010

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry

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