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

Authors
Kim, Jong-MinKim, YoonyoungShim, Jae-HyeokLee, Young-SuSuh, Jin-YooAhn, Jae-PyoungKim, Gyeung-HoCho, Young Whan
Issue Date
2013-08
Publisher
CAMBRIDGE UNIV PRESS
Citation
MICROSCOPY AND MICROANALYSIS, v.19, pp.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.
Keywords
HYDROGEN STORAGE; REVERSIBILITY; HYDROGEN STORAGE; REVERSIBILITY; solid-state hydrogen storage; complex hydride; dehydrogenation reaction; rehydrogenation reaction; reversibility; air sensitivity; air-lock transfer; transmission electron microscopy
ISSN
1431-9276
URI
https://pubs.kist.re.kr/handle/201004/127828
DOI
10.1017/S1431927613012531
Appears in Collections:
KIST Article > 2013
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