Hydrogen storage in Ti-Zr and Ti-Hf-based quasicrystals

K. F. Kelton, J. J. Hartzell, R. G. Hennig, V. T. Huett, Akito Takasaki

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


The depletion of the world's petroleum reserves and the increased environmental impact of conventional combustion-engine-powered automobiles are leading to renewed interest in hydrogen storage materials. In the mid 1990s, Ti/Zr/Hf-based quasicrystals were demonstrated to store more hydrogen than competing crystal intermetallic phases. Unfortunately, recovery of the hydrogen required temperatures in excess of 400°C, severely limiting the technological application of these materials. Here, the Ti/Zr-Hf-based quasicrystals and crystal approximants are reviewed and their hydrogenation properties are discussed. We also report the discovery of a relatively flat pressure plateau for hydrogenated TiZrNi quasicrystals at modest pressures (100-200psi) that extends to hydrogen concentrations in excess of 4 wt.%. Approximately 2wt.% of the hydrogen is easily recovered by heating at temperatures as low as 200°C.

Original languageEnglish
Pages (from-to)957-964
Number of pages8
JournalPhilosophical Magazine
Issue number6-8
Publication statusPublished - 2006 Feb 21

ASJC Scopus subject areas

  • Condensed Matter Physics


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