Unexpected dehydrogenation behavior of LiBH4/Mg(BH4)2 mixture associated with the in situ formation of dual-cation borohydride

Zhan Zhao Fang, Xiang Dong Kang, Ping Wang, Hai Wen Li, Shin-Ichi Orimo

Research output: Contribution to journalLetter

52 Citations (Scopus)

Abstract

In this paper, we report an experimental study of the mixed alkali metal and alkaline-earth metal borohydrides. It was found that dual-cation (Li, Mg) borohydride was in situ formed during the mechanical milling and subsequent heating process of 1:1 LiBH4/Mg(BH4)2 mixture. Compared with the constituent phases, the dual-cation borohydride exhibits lower onset dehydrogenation temperature. Furthermore, property examination results showed that the dehydrogenation reaction of the dual-cation borohydride may involve different mechanistic pathway from that of the constituent borohydrides. These findings suggest a viable approach for tailoring the dehydrogenation property of borohydrides, and should be of significance for better understanding the structure and property of ionic borohydrides.

Original languageEnglish
JournalJournal of Alloys and Compounds
Volume491
Issue number1-2
DOIs
Publication statusPublished - 2010 Feb 18

Keywords

  • Dehydrogenation
  • Dual-cation
  • Hydrogen storage
  • Lithium borohydride
  • Magnesium borohydride

ASJC Scopus subject areas

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

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