Preparation of Zn(BH4)2 and Diborane and Hydrogen Release Properties of Zn(BH4)2+xMgH2 (x=1, 5, 10, and 15)

被引：13
作者：
Kwak, Young Jun [1 ]
Kwon, Sung Nam [2 ]
Song, Myoung Youp [3 ]
机构：
[1] Chonbuk Natl Univ, Grad Sch, Dept Mat Engn, Jeonju 561756, South Korea
[2] Chonbuk Natl Univ, Profess Grad Sch Flexible & Printable Elect, Jeonju 561756, South Korea
[3] Chonbuk Natl Univ, Res Ctr Adv Mat Dev, Engn Res Inst, Div Adv Mat Engn, Jeonju 561756, South Korea
来源：
METALS AND MATERIALS INTERNATIONAL | 2015年 / 21卷 / 05期
关键词：
hydrogen absorbing materials; microstructure; X-ray diffraction; Scanning electron microscopy (SEM); Zn(BH4)(2)+xMgH(2) (x=1; 5; 10; and; 15); STORAGE PROPERTIES; MG; NI; MAGNESIUM; KINETICS; ALLOYS; ENHANCEMENT; HYDRIDE; NICKEL; LIBH4;
D O I：
10.1007/s12540-015-4604-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zn(BH4)(2) was prepared by milling ZnCl2 and NaBH4 in a planetary ball mill under Ar atmosphere, and Zn(BH4)(2) +xMgH(2) (x=1, 5, 10, and 15) samples were prepared. Diborane (B2H6) and hydrogen release characteristics of the Zn(BH4)(2) and Zn(BH4)(2)+xMgH(2) samples were studied. The samples synthesized by milling ZnCl2 and NaBH4 contained Zn(BH4)(2) and NaCl, together with small amounts of ZnCl2 and NaBH4. We designated these samples as Zn(BH4)(2)(+NaCl). The weight loss up to 400 degrees C of the Zn(BH4)(2)(+NaCl) sample synthesized by milling 4 h was 11.2 wt%. FT-IR analysis showed that Zn(BH4)(2) was formed in the Zn(BH4)(2)(+NaCl) samples. MgH2 was also milled in a planetary ball mill, and mixed with the Zn(BH4)(2)(+NaCl) synthesized by milling for 4 h in a mortar and pestle. The weight loss up to 400 degrees C of Zn(BH4)(2)(+NaCl)+MgH2 was 8.2 wt%, corresponding to the weight % of diborane and hydrogen released from the Zn(BH4)(2)(+NaCl)+MgH2 sample, with respect to the sample weight. DTA results of Zn(BH4) (2)(+NaCl)+xMgH(2) showed that the decomposition peak of Zn(BH4)(2) was at about 61 degrees C, and that of MgH2 was at about 370-389 degrees C.
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页码：971 / 976
页数：6
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