Microvoltammetric study of electrochemical hydrogenation of a surface- treated Mg2Ni alloy single particle

Ho Sung Kim, Matsuhiko Nisizawa, Takashi Itoh, Isamu Uchida

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5 Citations (Scopus)

Abstract

The effects of surface treatments on the hydrogen storage properties of a Mg2Ni alloy particle were investigated by the microvoltammetric technique, in which a carbon-filament microelectrode was manipulated to make electrical contact with the particle placed in a KOH aqueous solution. It was found that the hydrogen storage properties of Mg2Ni at room temperature were improved by the surface treatments with a nickel plating solution. The sodium salts (sodium phosphinate and sodium dihydrogen citrate) contained in the nickel plating solution made the alloy form an amorphous-like state, resulting in an improved hydrogen absorption/desorption capacity at room temperature as high as about 150 mA h g-1 from the original value of 17 mA h g-1.

Original languageEnglish
Pages (from-to)1643-1646
Number of pages4
JournalBulletin of the Chemical Society of Japan
Volume72
Issue number7
DOIs
Publication statusPublished - 1999 Jul 1

ASJC Scopus subject areas

  • Chemistry(all)

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