Microstructural Analysis of Dehydrogenation Products of the Ca(BH4)2-MgH2 Composite

Title
Microstructural Analysis of Dehydrogenation Products of the Ca(BH4)2-MgH2 Composite
Authors
김종민김윤영심재혁이영수서진유안재평김긍호조영환
Keywords
solid-state hydrogen storage; complex hydride; dehydrogenation reaction; rehydrogenation reaction; reversibility; air sensitivity; air-lock transfer; trasmission electron microscopy
Issue Date
2013-08
Publisher
MICROSCOPY AND MICROANALYSIS
Citation
VOL 19, NO S5, 149-151
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.
URI
http://pubs.kist.re.kr/handle/201004/45743
ISSN
14319276
Appears in Collections:
KIST Publication > Article
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