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
	2010
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	114 期号:51 页码:22736-22741
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.
部门归属	[fang, zhan-zhao; kang, xiang-dong; luo, jun-hong; wang, ping] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [li, hai-wen; orimo, shin-ichi] tohoku univ, inst mat res, sendai, miyagi 9808577, japan.;wang, p (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;pingwang@imr.ac.cn
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)
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WOS记录号	WOS:000285447000052
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31091
专题	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.