کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6763559 1431570 2019 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved hydrogen storage dynamics of amorphous and nanocrystalline Ce-Mg-Ni-based CeMg12-type alloys synthesized by ball milling
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Improved hydrogen storage dynamics of amorphous and nanocrystalline Ce-Mg-Ni-based CeMg12-type alloys synthesized by ball milling
چکیده انگلیسی
In this paper, we applied ball milling technique to prepare amorphous and nanocrystalline CeMg11Ni + x wt.% Ni (x = 100, 200) alloys which gaseous and electrochemical hydrogen storage dynamics and structure characteristics were systematically studied. It is shown that increasing Ni proportion promotes the amorphization of alloys, meanwhile, it improves their gaseous and electrochemical hydrogenation dynamics significantly. Besides, adjusting milling duration markedly changes the hydrogen storage performances. With the prolonging of milling time, the hydrogen storage capacity has a maximal value, which are 5.949 wt.% and 6.157 wt.% respectively for x = 100 and 200 alloys, while the dehydriding rate always increases. The hydriding rate and high rate discharge ability have the maximal values with the variation of milling time as well. The improved gaseous hydrogen storage dynamics is convinced to be connected with the reduction of dehydrogenation activation energy resulted by increasing Ni proportion and prolonging milling duration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 132, March 2019, Pages 167-175
نویسندگان
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