کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7720785 | 1497505 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The enhanced hydrogen storage performance of (Mg-B-N-H)-doped Mg(NH2)-2LiH system
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Doping Mg(NH2)2-2LiH by Mg2(BH4)2(NH2)2 compound exhibits enhanced hydrogen de/re-hydrogenation performance. The peak width in temperature-programmed desorption (TPD) profile for the Mg(NH2)2-2LiH-0.1Mg2(BH4)2(NH2)2 was remarkably shrunk by 60 °C from that of pristine Mg(NH2)2-2LiH, and the peak temperature was lowered by 12 °C from the latter. Its isothermal dehydrogenation rate was greatly improved by five times from the latter at 200 °C. XRD, FTIR and NMR analyses revealed that a series of reactions occurred in the dehydrogenation of the composite. The prior interaction between LiH and Mg-B-N-H yielded intermediate LiBH4, which subsequently reacted with Mg(NH2)2 and LiH in molar ratio of 1:6:9 to form Li2Mg2(NH)3 and Li4BN3H10 phases. The observed 6Mg(NH2)2-9LiH-LiBH4 combination dominated the hydrogen release and soak in the composite system, and enhanced the kinetics of the system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 4, 22 January 2014, Pages 1710-1718
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 4, 22 January 2014, Pages 1710-1718
نویسندگان
Yao Zhang, Zhitao Xiong, Hujun Cao, Guotao Wu, Ping Chen,