کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803634 | 1516470 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of substitution of Zr for La on the electrochemical properties of La0.7âxZrxMg0.3Ni2.45Mn0.1Co0.75Al0.2 hydrogen storage electrode alloys
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of substitution of Zr for La on the electrochemical properties of La0.7âxZrxMg0.3Ni2.45Mn0.1Co0.75Al0.2 hydrogen storage electrode alloys The effect of substitution of Zr for La on the electrochemical properties of La0.7âxZrxMg0.3Ni2.45Mn0.1Co0.75Al0.2 hydrogen storage electrode alloys](/preview/png/9803634.png)
چکیده انگلیسی
In this paper, the effects of substitution of Zr for La on the structure and electrochemical properties of the La0.7âxZrxMg0.3Ni2.45Mn0.1Co0.75Al0.2 (x = 0, 0.02, 0.04, 0.06, 0.08, 0.1) hydrogen storage alloys have been studied systematically. X-ray powder diffraction (XRD) analysis shows that all the alloys mainly consist of a (La, Mg)Ni3 phase and a LaNi5 phase. The cell volumes of these two phases decrease with increasing x. Electrochemical studies indicate that the maximum discharge capacity decreases from 364.5 mAh/g (x = 0) to 306.9 mAh/g (x = 0.1). The high rate dischargeability (HRD) first increases and then decreases with increasing x. Electrochemical impedance spectroscopy (EIS), linear polarization, anodic polarization and potential-step measurements showed that the exchange current density I0 always decreases, the limiting current density IL and the hydrogen diffusion coefficient D first increases and then decreases with increasing x from 0 to 0.1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 397, Issues 1â2, 19 July 2005, Pages 269-275
Journal: Journal of Alloys and Compounds - Volume 397, Issues 1â2, 19 July 2005, Pages 269-275
نویسندگان
Hongge Pan, Yuanjian Yue, Mingxia Gao, Xuefeng Wu, Ni Chen, Yongquan Lei, Qidong Wang,