کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7708861 | 1497326 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Al presence and synthesis method on phase composition of the hydrogen absorbing La-Mg-Ni-based compounds
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Al presence and synthesis method on phase composition of the hydrogen absorbing La-Mg-Ni-based compounds Effect of Al presence and synthesis method on phase composition of the hydrogen absorbing La-Mg-Ni-based compounds](/preview/png/7708861.png)
چکیده انگلیسی
Results for (La,Mg)Ni3.5 and (La,Mg)(Ni,Al)3.5 systems synthesized by metallurgical and mechanochemical techniques are reported. Powder X-ray and neutron diffraction combined with Rietveld refinements and profile analysis show that depending on the applied synthesis method various structurally related phases can be obtained for the same nominal composition. The hexagonal A2B7-type structure incorporating aluminum, with the refined composition La0.77Mg0.23Ni3.41Al0.09, has been identified. Al atoms occupy 12% of the 6h site within the LaNi5 slabs. This intermetallic phase absorbs hydrogen (deuterium) when exposed to 10Â bar of H2 (D2) gas at room temperature. The H(D)-containing phase expands isotropically and retains the original symmetry of the parent compound.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 51, 21 December 2017, Pages 30135-30144
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 51, 21 December 2017, Pages 30135-30144
نویسندگان
Matylda N. Guzik, Julien Lang, Jacques Huot, Sabrina Sartori,