کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719198 | 1497491 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Using hydrogen activated by microwave plasma vs. molecular hydrogen for hydrogen storage in tungsten disulfide inorganic nanotubes
ترجمه فارسی عنوان
استفاده از هیدروژن فعال توسط پلاسما مایکروویو در مقابل هیدروژن مولکولی برای ذخیره سازی هیدروژن در نانولوله های غیر آلی تنگستن دی سولفید
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
ذخیره سازی هیدروژن، پلاسمای مایکروویو، نانولوله های معدنی، دی فلوید تنگستن، هیدروژن فعال
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
In this work we investigate the inorganic nanotubes of layered tungsten disulfide, as material for hydrogen storage. These nanotubes may allow hydrogen to be either chemi- or physisorbed inside their crystalline structure (in between the layers), inside hollow core of nanotubes, on the surface or in the open interstitial pore spaces of nanotubes' powder mesh. While exposure to molecular hydrogen was found to have measurable but limited absorption rate - up to 0.13 wt.%, the exposure to hydrogen activated by microwave (MW) plasma resulted in much higher value of adsorbed hydrogen of â¼1 wt.%. These observations could be attributed to more effective interaction of activated vs. molecular hydrogen with nanotubes surface due to the strong chemisorption of activated hydrogen compared to weaker physisorption of molecular hydrogen. We report here the results of such exposures and analyze the absorption and diffusion of hydrogen by different methods: adsorption-desorption curves obtained by pressure-composition-temperature isotherm measurements, and hydrogen depth profiles measured by Secondary Ion Mass Spectroscopy. We found that 5 min exposure to MW plasma at 400 W and 60 Torr (causing local heating up to â¼100 °C) results in substantial hydrogen retention, though some etching of the substrate material may occur during such treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 18, 15 June 2014, Pages 9837-9841
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 18, 15 June 2014, Pages 9837-9841
نویسندگان
A. Laikhtman, Sh Michaelson, A. Hoffman, T.K. Kim, H.R. Moon, A. Zak,