کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803642 | 1516470 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
LmNi4.78Mn0.22 alloy modified with Si used as anodic materials in borohydride fuel cells
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Fuel cells using borohydride as the fuel have received much attention because of high potential and power density. LmNi4.78Mn0.22 alloy used as the anodic material instead of noble metal shows high catalytic activity both in the electrochemical oxidation reaction and the hydrolysis of fuel. In this work, Si has been added to modify LmNi4.78Mn0.22 alloy by ball-milling and heat-treatment methods. It is found that the surface of the alloy particles is covered with Si by ball-milling treatment, and then, the Si on the surface diffuses into the bulk of the alloy particles after heat treatment. Experimental results show that the electrochemical catalytic activity of the alloy after modification with Si decreases; at the same time, the H2 generation rate also decreases in the discharge process. The utilization of the fuel increases from 21.37% for the parent alloy to 95.27% for the modified alloy at a small current density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 397, Issues 1â2, 19 July 2005, Pages 313-316
Journal: Journal of Alloys and Compounds - Volume 397, Issues 1â2, 19 July 2005, Pages 313-316
نویسندگان
Lianbang Wang, Chun-an Ma, Xinbiao Mao,