کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7718942 | 1497492 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical investigations on amorphous Fe-base alloys for alkaline water electrolysis
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrochemical investigations on amorphous Fe-base alloys for alkaline water electrolysis Electrochemical investigations on amorphous Fe-base alloys for alkaline water electrolysis](/preview/png/7718942.png)
چکیده انگلیسی
In this work different amorphous melt-spun Fe-alloys (Fe82B18, Fe80Si10B10, Fe60Co20Si10B10) were investigated as cathode materials for the alkaline electrolysis of water. In particular, the influence of cobalt as well as the metalloids boron and silicon on the activity for the hydrogen evolution reaction (HER) was studied in 1Â M KOH at 298Â K using cyclic voltammetric, galvanostatic and polarization techniques. The electrocatalytic activity was evaluated in the view of the overpotential. It was found that cyclic voltammetric techniques can be used to activate the melt-spun Fe-alloys strongly. Different cyclic voltammetric activation procedures are discussed and the influence of the sweep rate and the potential window on the HER activity was elucidated. The experimental data indicate that the addition of metalloids and, most importantly, of cobalt improves the HER activity of the materials. Thus, the overpotential can be reduced by 200Â mV compared to polycrystalline Ni.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 17, 5 June 2014, Pages 8926-8937
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 17, 5 June 2014, Pages 8926-8937
نویسندگان
Christian Immanuel Müller, Thomas Rauscher, Andreas Schmidt, Thomas Schubert, Thomas WeiÃgärber, Bernd Kieback, Lars Röntzsch,