کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719542 | 1497493 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stability of LaNi5âxSnx cycled in hydrogen
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this work we study the effect of cycling in hydrogen with a purity grade 4.5 of six alloys belonging to the LaNi5âxSnx family for 0 â¤Â x â¤Â 0.5. Measurements consist in the alternate repetition of absorption reactions at a temperature of 316 K and an initial pressure of 800 kPa, each followed by a desorption reaction at the same temperature and a maximum backpressure of 2 kPa. All samples present good stability, preserving at least 98% of their initial capacity after 100 cycles. Samples with composition LaNi5 and LaNi4.55Sn0.45 were subjected to 1000 cycles, after which we observe a higher stability from the Sn-containing alloy (96% of the initial capacity preserved versus 92% for LaNi5). Absorption characteristic times do not suffer important changes in either case. Desorption is gradually retarded when Sn content is higher than 0.4 at.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 16, 27 May 2014, Pages 8791-8796
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 16, 27 May 2014, Pages 8791-8796
نویسندگان
E.M. Borzone, M.V. Blanco, A. Baruj, G.O. Meyer,