Electrochemical characteristics of V-Ti-Zr-Ni protium absorbing alloys for metal hydride electrodes

Takuya Tamura, Takahiro Kuriiwa, Takeshi Fuda, Atsunori Kamegawa, Masuo Okada

Research output: Contribution to journalArticle

Abstract

We have developed the new compositional V-7.4at%Ti-7.4at%Zr-7.4at%Ni alloys that consist of BCC as main phase, and C14 Laves phases along grain boundary. They have the flat plateau region in the PCT curves and 2.0mass% protium absorption-desorption capacity. This paper investigates electrochemical characteristics of V-7.4at%Ti-7.4at%Zr-7.4at%Ni protium absorbing alloys as metal hydride electrodes. The electrodes which were prepared by mixing as-cast alloys with 300mass% Ni powder show 372 mAh/g discharge capacity at 10 mA/g discharge current. This result indicates that V-7.4at%Ti-7.4at%Zr-7.4at%Ni alloys work as metal hydride electrodes. It was found that the electrodes which were prepared by mixing as-cast alloys with Ni powder and heat-treated for 1 h at 873 K can discharge by the protium that can't desorb in a gas reaction.

Original languageEnglish
Pages (from-to)68-72
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume47
Issue number1
DOIs
Publication statusPublished - 2000 Jan

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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