کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7711606 | 1497421 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ni-Mo-B alloys as cathode material for alkaline water electrolysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The hydrogen evolution reaction (HER) of nanocrystalline Ni-Mo-B alloys was investigated in alkaline solution in comparison with the corresponding crystalline materials and polycrystalline nickel. The nanocrystalline alloys, prepared by melt spinning, were investigated towards the HER in 1Â M KOH solution at 298Â K. An electrochemical activation procedure (cyclic reduction-oxidation pre-treatment) was used to enhance the apparent HER activity. In case of the crystalline Ni-Mo-B master alloys the origin of the activity can mainly be attributed to an increase of the real surface area (roughening) caused by a dissolution of Mo-containing phases. Interestingly, a roughening of nanocrystalline Ni-Mo-B alloys did not occur, probably, because of the very homogenous and fine microstructure of these materials. The higher HER activity of the nanocrystalline Ni-Mo-B alloys is obviously caused by a higher intrinsic activity of the nanocrystalline Ni-Mo-B alloys and a synergistic effect of Mo.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 4, 30 January 2016, Pages 2165-2176
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 4, 30 January 2016, Pages 2165-2176
نویسندگان
Thomas Rauscher, Christian Immanuel Müller, Andreas Schmidt, Bernd Kieback, Lars Röntzsch,