Dehydriding and rehydriding properties of yttrium borohydride Y(BH4)3 prepared by liquid-phase synthesis

Yigang Yan, Hai Wen Li, Toyoto Sato, Naoyashi Umeda, Kazutoshi Miwa, Shin ichi Towata, Shin ichi Orimo

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Y(BH4)3 was prepared by liquid-phase synthesis, and its dehydriding and rehydriding properties were systematically investigated by performing thermogravimetry and differential thermal analysis (TG-DTA) and powder X-ray diffraction (XRD) measurement. The dehydriding reaction of Y(BH4)3 starts at appropriately 460 K, and a total of 7.8 wt% of hydrogen is released up to 773 K. Phase transformation and melting are observed in Y(BH4)3 at approximately 474 K and 499 K, respectively. Both DTA and XRD measurement results indicate that the decomposition of Y(BH4)3 proceeds via multistep dehydriding reactions accompanied with the formation of an intermediate phase. Furthermore, Y(BH4)3 is proved to be partially rehydrided.

Original languageEnglish
Pages (from-to)5732-5736
Number of pages5
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number14
DOIs
Publication statusPublished - 2009 Jul
Externally publishedYes

Keywords

  • Borohydride
  • Complex hydride
  • Hydrogen
  • Hydrogen storage
  • Transition metal

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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