کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1626740 1516444 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rapid evaluation of LaNi5−xMnx (x = 0.1–0.5) by X-ray diffraction and powder microelectrode (PME) techniques
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Rapid evaluation of LaNi5−xMnx (x = 0.1–0.5) by X-ray diffraction and powder microelectrode (PME) techniques
چکیده انگلیسی

LaNi5−xMnx (x = 0.1–0.5) were systematically investigated by both X-ray diffraction and powder microelectrode (PME) techniques. The results of XRD study show that both the lattice parameters and the cell volume of the alloy increase linearly with increasing the amount of Mn substitution. PME study of the alloys can be finished in a very short time (less than 10 h for each sample), thus it avoids the calendar corrosion of Mn and gives more true information about the function of Mn partial substitution for Ni. The results of PME study show that Mn partial substitution for Ni shortens the activation cycle, improves the cycling performance, decreases the maximum discharge ability and diffusion coefficient, and increases the overpotential of the alloy electrode. The calendar corrosion occurred on composite alloy electrodes should be responsible for the discrepancy between the results of this work and those of the previous ones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 429, Issues 1–2, 21 February 2007, Pages 285–291
نویسندگان
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