Electrochemical properties of Ti45Zr38-xNi 17+x (0 ≤ x ≤ 8) quasicrystals produced by rapid-quenching

Akito Takasaki, Chihiro Kuroda, Sang Hwa Lee, Jae Yong Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Discharge performances of Ti45Zr38-xNi17+x (0 ≤ x ≤ 8) ribbons produced by rapid-quenching were measured by a three-electrode cell at room temperature, and the effect of substitution of Ni for Zr was investigated. All the ribbons after rapid-quenching were mostly the icosahedral (i) quasicrystal phase with a negligible amount of C14 Laves phase (hcp). The discharge capacity increased with increasing amount of Ni substituted for Zr. The maximum discharge capacity achieved was about 90 mAh/g from (Ti45Zr30Ni25) ribbon after substitution of Ni for Zr. The discharge performance was almost stable against the charge/discharge cycle (until 15 cycles) for all the ribbons, and the i-phase structure was also stable even after the 15th charge/discharge cycle. No metal hydride formation was observed.

Original languageEnglish
Pages (from-to)S782-S785
JournalJournal of Alloys and Compounds
Volume509
Issue numberSUPPL. 2
DOIs
Publication statusPublished - 2011 Sep 1

Keywords

  • Discharge capacity
  • Quasicrystal
  • Rapid-quenching
  • Titanium-zirconium-nickel

ASJC Scopus subject areas

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

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