کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290009 | 973316 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural investigation and electrochemical property of Mg63Ni27Nd10 amorphous alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Amorphous Mg-based alloy Mg63Ni27Nd10 was prepared by melt-spinning. The phase structures and the electrochemical properties of the ribbons before and after charge/discharge cycling were characterized by high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) analysis and galvanotactic charge-discharge cycle test, respectively. It was found that the amorphous structure begins to crystallize after four cycles of hydrogenation/dehydrogenation and a new nano-crystallized phase NdMg2Ni9 was detected with average grain size in the range 5-10 nm. A good cycle life and high discharge capacity were also observed in the Mg63Ni27Nd10 alloy electrode. The highest discharge capacity reached 580.5 mAh gâ1 at the discharge current densities of 50 mA gâ1. It is suggested that homogeneous microstructure contributes to the enhancement in electrochemical characteristics, the presence of NdMg2Ni9 being beneficial for the improvement in cycle life of Mg63Ni27Nd10 alloy electrode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 189, Issue 2, 15 April 2009, Pages 1247-1250
Journal: Journal of Power Sources - Volume 189, Issue 2, 15 April 2009, Pages 1247-1250
نویسندگان
Lin-jun Huang, Jian-guo Tang, G.Y. Liang, Yao Wang, D.C. Wu,