کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1279614 1497654 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exploring the hydrogen sorption capacity of Mg–Ni powders produced by the vapour deposition technique
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Exploring the hydrogen sorption capacity of Mg–Ni powders produced by the vapour deposition technique
چکیده انگلیسی

Nanocrystalline Mg–Ni alloy powder was produced via the magnetron co-sputtering technique. The samples obtained showed crystallisation of Mg and Mg2Ni and an overall morphological heterogeneity with different enriched zones, as evidenced by microstructural analysis. A number of pressure-composition-isotherms (PCI) were carried out on these samples at a range of temperatures.Following hydrogenation, different hydrogen sorption behaviours were observed depending on the samples’ relative composition in terms of Mg and Mg2Ni. Hydrogenation/dehydrogenation cycling is believed to have caused modification of the nanocrystalline materials investigated. The derived dissociation enthalpies of the corresponding hydrides, MgH2 and Mg2NiH4, were found to be coherent with values reported in literature, with the exception of two samples. In addition, one of these samples showed a third plateau pressure pointing to the presence of a hydrogenated metastable phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 12, June 2008, Pages 3122–3127
نویسندگان
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