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Microstructural analysis of dehydrogenation products of the Ca(BH₄)₂-MgH₂ composite.

Authors
  • Kim, Jong-Min
  • Kim, Yoonyoung
  • Shim, Jae-Hyeok
  • Lee, Young-Su
  • Suh, Jin-Yoo
  • Ahn, Jae-Pyoung
  • Kim, Gyeung-Ho
  • Cho, Young Whan
Type
Published Article
Journal
Microscopy and Microanalysis
Publisher
Cambridge University Press
Publication Date
Aug 01, 2013
Volume
19 Suppl 5
Pages
149–151
Identifiers
DOI: 10.1017/S1431927613012531
PMID: 23920195
Source
Medline
License
Unknown

Abstract

The microstructural analysis of the dehydrogenation products of the Ca(BH₄)₂-MgH₂ composite was performed using transmission electron microscopy. It was found that nanocrystalline CaB₆ crystallites formed as a dehydrogenation product throughout the areas where the signals of Ca and Mg were simultaneously detected, in addition to relatively coarse Mg crystallites. The uniform distribution of the nanocrystalline CaB₆ crystallites appears to play a key role in the rehydrogenation of the dehydrogenation products, which implies that microstructure is a crucial factor determining the reversibility of reactive hydride composites.

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