Novel combinations of high density hydrogen storage materials

Christopher Wolverton*, Andrea Sudik, Jun Yang, Don Siegel

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Practical hydrogen storage for mobile applications requires materials that contain large amounts of hydrogen, have low decomposition temperatures, and fast kinetics for absorption and desorption. Mixtures of two high-density hydrides such as LiBH4/MgH2, LiNH2/LiBH4, and LiNH2/MgH2 have recently emerged as an approach toward improved thermodynamic properties relative to their individual component reactions. However, in practice, appropriate thermodynamics is not enough to guarantee that hydrogen will evolve at the expected temperature and at a suitable purity and rate. We present a combined experimental/computational approach for a new, ternary combination of high density hydrogen storage materials, LiBH4/LiNH2/MgH2. Experimental data for these materials include kinetic desorption, powder X-ray, FT-IR, and MS and computational results are based on density functional theory calculations. We demonstrate reactions with improved hydrogen storage properties in terms of reversibility, kinetics, and hydrogen purity, while preserving high hydrogen density and favorable thermodynamics.

Original languageEnglish (US)
Title of host publication233rd ACS National Meeting, Abstracts of Scientific Papers
StatePublished - 2007
Event233rd ACS National Meeting - Chicago, IL, United States
Duration: Mar 25 2007Mar 29 2007

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other233rd ACS National Meeting
CountryUnited States
CityChicago, IL
Period3/25/073/29/07

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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