کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7708338 | 1497322 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen storage performance of the as-milled YMgNi alloy catalyzed by CeO2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrogen storage performance of the as-milled YMgNi alloy catalyzed by CeO2 Hydrogen storage performance of the as-milled YMgNi alloy catalyzed by CeO2](/preview/png/7708338.png)
چکیده انگلیسی
The YMgNi-based YMg11Ni + 5 wt%CeO2 (named YMg11Ni5CeO2) alloys were prepared by using mechanical ball milling. The influences of CeO2 on the structure and gaseous hydrogen storage performance of YMg11Ni alloy were studied systematically. The structures of sample alloy were determined by X-ray diffraction (XRD) and high resolution transmission electron microscope (HRTEM). The gaseous hydrogen storage performances were tested by using an automatically controlled Sieverts apparatus. The dehydrogenation performance was studied by thermogravimetry (TG) and differential scanning calorimetry (DSC). The hydrogen desorption activation energy was calculated by adopting Kissinger methods. The results show that adding CeO2 into YMg11Ni can lower the hydrogen storage thermodynamics slightly and increase the hydrogen absorption/desorption rate obviously. Moreover, the hydrogen desorption activation energy (Ede(k)) of the alloys is 91.53 kJ molâ1 for YMg11Ni alloy and 74.89 kJ molâ1 for YMg11Ni5CeO2 alloy, respectively. This is because the hydrogen desorption kinetic of the alloy is improved by adding catalyst CeO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 3, 18 January 2018, Pages 1643-1650
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 3, 18 January 2018, Pages 1643-1650
نویسندگان
Yanghuan Zhang, Yaqin Li, Hongwei Shang, Zeming Yuan, Yan Qi, Xiaoping Dong, Shihai Guo,