Formation and Hydrogen Storage Properties of Dual-Cation (Li, Ca) Borohydride

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	Formation and Hydrogen Storage Properties of Dual-Cation (Li, Ca) Borohydride
	Z. Z. Fang ; X. D. Kang ; J. H. Luo ; P. Wang ; H. W. Li ; S. Orimo
刊名	Journal of Physical Chemistry C
	2010
卷号	114 期号:51 页码:22736-22741
关键词	well-crystallized mg(bh4)(2) b-h system metal-borohydrides complex hydrides thermodynamical stabilities 1st-principles calculations lithium borohydride libh4 reversibility ca(bh4)(2)
ISSN号	1932-7447
中文摘要	Lithium borohydride, LiBH(4), possesses high hydrogen capacity, but cannot be used for hydrogen storage owing to the problematic H-exchange kinetics and thermodynamics. In the present study, we employed the Li(+)-Ca(2+) combination strategy to improve the de/rehydrogenation properties of LiBH4. Our study found that mechanically milling 1:1 LiBH(4)/Ca(BH(4))(2) mixture formed a dual-cation borohydride, Li(0.9)Ca(BH(4))(2.9), which then transformed to stoichiometric LiCa(BH(4))(3) in the heating process. The formation and decomposition behaviors of LiCa(BH(4))(3) were studied using X-ray diffraction and thermogravimetry/differential scanning calorimetry/mass spectroscopy techniques. It was found that LiCa(BH(4))(3) differs significantly from the component phases in terms of physical properties, decomposition behaviors, and mechanistic pathway. In particular, LiCa(BH(4))(3) exhibits improved de/rehydrogenation properties relative to the component phases. These experimental findings exemplified the effectiveness of manipulation of dual-cation combination in tuning the de/rehydrogenation properties of the ionic light-metal borohydrides.
原文出处	://WOS:000285447000052
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31091]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Z. Fang,X. D. Kang,J. H. Luo,et al. Formation and Hydrogen Storage Properties of Dual-Cation (Li, Ca) Borohydride[J]. Journal of Physical Chemistry C,2010,114(51):22736-22741.
APA	Z. Z. Fang,X. D. Kang,J. H. Luo,P. Wang,H. W. Li,&S. Orimo.(2010).Formation and Hydrogen Storage Properties of Dual-Cation (Li, Ca) Borohydride.Journal of Physical Chemistry C,114(51),22736-22741.
MLA	Z. Z. Fang,et al."Formation and Hydrogen Storage Properties of Dual-Cation (Li, Ca) Borohydride".Journal of Physical Chemistry C 114.51(2010):22736-22741.