Reversible room temperature hydrogen storage in high-entropy alloy TiZrCrMnFeNi

Parisa Edalati, Ricardo Floriano, Abbas Mohammadi, Yongtao Li, Guilherme Zepon, Hai Wen Li, Kaveh Edalati

Research output: Contribution to journalArticle

Abstract

Despite potential of hydride-forming alloys for hydrogen storage, there have been few alloys which can reversibly store hydrogen without heating or activation treatment. In this study, a high-entropy alloy is designed for room temperature hydrogen storage based on three criteria: total valence electron concentration (VEC) of 6.4, single-phase thermodynamic stability (examined by CALPHAD calculations) and AB2H3 hydride formation (A: hydride-forming elements, B: elements without affinity to hydrogen, H: hydrogen). The designated alloy, TiZrCrMnFeNi containing 95 wt% C14 Laves phase, absorbs and desorbs 1.7 wt% of hydrogen (hydrogen-to-metal ratio: 1) at room temperature with a fast kinetics and without activation treatment.

Original languageEnglish
Pages (from-to)387-390
Number of pages4
JournalScripta Materialia
Volume178
DOIs
Publication statusPublished - Mar 15 2020

Fingerprint

Hydrogen storage
Hydrogen
Entropy
entropy
Hydrides
room temperature
hydrogen
hydrides
Chemical elements
Temperature
Chemical activation
Phase stability
activation
Laves phases
Thermodynamic stability
Metals
Heating
affinity
Kinetics
Electrons

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Cite this

Reversible room temperature hydrogen storage in high-entropy alloy TiZrCrMnFeNi. / Edalati, Parisa; Floriano, Ricardo; Mohammadi, Abbas; Li, Yongtao; Zepon, Guilherme; Li, Hai Wen; Edalati, Kaveh.

In: Scripta Materialia, Vol. 178, 15.03.2020, p. 387-390.

Research output: Contribution to journalArticle

Edalati, Parisa ; Floriano, Ricardo ; Mohammadi, Abbas ; Li, Yongtao ; Zepon, Guilherme ; Li, Hai Wen ; Edalati, Kaveh. / Reversible room temperature hydrogen storage in high-entropy alloy TiZrCrMnFeNi. In: Scripta Materialia. 2020 ; Vol. 178. pp. 387-390.
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