کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10567389 | 973252 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructures and electrochemical performances of La2Mg(Ni0.85Co0.15)9Crx (x = 0-0.2) electrode alloys prepared by casting and rapid quenching
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructures and electrochemical performances of La2Mg(Ni0.85Co0.15)9Crx (x = 0-0.2) electrode alloys prepared by casting and rapid quenching Microstructures and electrochemical performances of La2Mg(Ni0.85Co0.15)9Crx (x = 0-0.2) electrode alloys prepared by casting and rapid quenching](/preview/png/10567389.png)
چکیده انگلیسی
In order to improve the electrochemical cycle stability of La-Mg-Ni system (PuNi3-type) hydrogen storage alloy, a trace of Cr was added and rapid quenching techniques were employed. The electrochemical performances and microstructures of the as-cast and -quenched alloys were determined and measured. The effects of Cr content and quenching rate on the microstructures and electrochemical properties of the alloys were investigated in detail. The obtained results show that the as-cast and -quenched alloys are composed of the (La, Mg)Ni3 phase (PuNi3-type structure) and the LaNi5 phase as well as the LaNi2 phase. The amount of the LaNi2 phase increases with the increase of Cr content. The addition of Cr enhances the cycle stability of the as-cast and -quenched alloys, but decreases the discharge capacities of the alloys. The cycle lives of the alloys increase with the increase of the quenching rate. The as-cast and -quenched alloys have an excellent activation performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 144, Issue 1, 1 June 2005, Pages 255-261
Journal: Journal of Power Sources - Volume 144, Issue 1, 1 June 2005, Pages 255-261
نویسندگان
Yang-Huan Zhang, Xiao-Ping Dong, Guo-Qing Wang, Shi-Hai Guo, Xin-Lin Wang,