High throughput screening of the ternary LiNH2-MgH2-LiBH4 phase diagram

G. J. Lewis*, J. W A Sachtler, J. J. Low, D. A. Lesch, S. A. Faheem, P. M. Dosek, L. M. Knight, L. Halloran, C. M. Jensen, Jun Yang, Andrea Sudik, Donald J. Siegel, Christopher Wolverton, Vidvuds Ozolins, Shu Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Here we apply combinatorial synthesis and screening (CSS) techniques with synthesis and testing of up to 48 samples in parallel to increase the rate of discovery of improved complex hydrides and dopants. In this paper we will demonstrate the application of CSS to a detailed investigation of the ternary LiNH2-MgH2-LiBH4 phase diagram. Most points on this phase diagram yield materials with high theoretical hydrogen storage and offer the potential for improved storage properties as inspired by previous studies of binary systems (edges of the phase diagram) that have yielded interesting results in the literature. By using CSS we have found ternary mixtures that exhibit reversible chemistry similar to the 2LiNH2-MgH2 system that have superior properties with respect to reversibility and desorption temperature, an optimum occurring at 0.6LiNH2-0.3MgH2-0.1LiBH4. Hydrogen storage capacities and the structural characterization of the as-synthesized and dehydrided materials will be reported as a function of composition. Detailed characterization of the most promising materials will also be presented.

Original languageEnglish (US)
Pages (from-to)355-359
Number of pages5
JournalJournal of Alloys and Compounds
Volume446-447
DOIs
StatePublished - Oct 31 2007

Keywords

  • Combinatorial chemistry
  • High throughput characterization
  • Hydrogen absorbing materials
  • Mechanical alloying
  • Thermal analysis
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'High throughput screening of the ternary LiNH<sub>2</sub>-MgH<sub>2</sub>-LiBH<sub>4</sub> phase diagram'. Together they form a unique fingerprint.

Cite this