High-entropy alloys as anode materials of nickel - metal hydride batteries

Parisa Edalati, Abbas Mohammadi, Yongtao Li, Hai Wen Li, Ricardo Floriano, Masayoshi Fuji, Kaveh Edalati

Research output: Contribution to journalArticlepeer-review

Abstract

High-entropy alloys are potential candidates for various applications including hydrogen storage in the hydride form and energy storage in batteries. This study employs HEAs as new anode materials for nickel - metal hydride (Ni-MH) batteries. The TixZr2-xCrMnFeNi alloys with different Ti/Zr ratios, having the C14 Laves structure, are used. These alloys are selected because they show room-temperature hydriding/dehydriding capability. The HEAs successfully act as negative electrode of Ni-MH batteries with good charge/discharge cyclability, while there are optimum Ti/Zr ratios for the highest storage capacity and the fastest activity. These findings introduce HEAs as potential anode materials for Ni-MH battery application.

Original languageEnglish
Article number114387
JournalScripta Materialia
Volume209
DOIs
Publication statusPublished - Mar 1 2022

All Science Journal Classification (ASJC) codes

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

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