کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148230 | 1497386 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced hydrogen desorption properties of LiBH4-Ca(BH4)2 by a synergetic effect of nanoconfinement and catalysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
NbF5 and eutectic 0.68LiBH4-0.32Ca(BH4)2 were successively infiltrated into highly ordered mesoporous carbon (CMK-3) to obtain a LiBH4-Ca(BH4)2-NbF5@CMK-3 composite. A synergetic effect of nanoconfinement and catalysis on hydrogen desorption properties of the composite was achieved. The onset desorption temperature of LiBH4-Ca(BH4)2-NbF5@CMK-3 is dramatically lower than 120 °C compared with that of as-milled LiBH4-Ca(BH4)2 or LiBH4-Ca(BH4)2@CMK-3. A hydrogen amount as high as 13.3 wt% can be released within 250 min for LiBH4-Ca(BH4)2-NbF5@CMK-3, compared with only 10.4 wt% for pure LiBH4-Ca(BH4)2, in which nanoconfinement and catalysis both make some contribution. The cycling hydrogen desorption performance of the composite becomes better likewise due to the addition of NbF5. Further microstructure analysis reveals that Fâ tended to bind with Ca2+ to form CaF2, whereas Nb compound is believed to catalyze the whole system in the form of Nb-based boride (NbB2).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 39, 19 October 2016, Pages 17462-17470
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 39, 19 October 2016, Pages 17462-17470
نویسندگان
Bing Zhai, Xuezhang Xiao, Wenping Lin, Xu Huang, Xiulin Fan, Shouquan Li, Hongwei Ge, Qidong Wang, Lixin Chen,