کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5145632 | 1497337 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The enhanced de/re-hydrogenation performances of LiNa2AlH6 combined with two-dimension lamellar Ti3C2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The enhanced de/re-hydrogenation performances of LiNa2AlH6 combined with two-dimension lamellar Ti3C2 The enhanced de/re-hydrogenation performances of LiNa2AlH6 combined with two-dimension lamellar Ti3C2](/preview/png/5145632.png)
چکیده انگلیسی
In the present work, two-dimension lamellar Ti3C2 was employed as additive of LiNa2AlH6. Volumetric dehydrogenation results informed that the onset dehydrogenation temperature of the ball milled LiNa2AlH6Â +Â 5Â wt% Ti3C2 sample was lowered by 68Â K from that of pristine LiNa2AlH6. Isothermal pressure-composition (P-C-I) curves and van't Hoff plots demonstrated that the dehydrogenation enthalpy value (61Â kJÂ mol H2â1) of LiNa2AlH6Â +Â 5Â wt% Ti3C2 was significantly reduced from the pristine LiNa2AlH6(68Â kJÂ mol H2â1). By means of XPS analyses, it can be revealed that the destabilization of LiNa2AlH6 should be resulted from the involvement of Ti and the yield of unidentified Ti3+ species. Furthermore, it can be concluded that the lowering of dehydrogenation temperature was merely due to the thermal destabilization of LiNa2AlH6 by Ti3C2, since Ti3C2 hardly improved the dehydrogenation kinetics of LiNa2AlH6 and reduced its activation energy. However, hydrogenation kinetics was slightly enhanced from the released products of LiNa2AlH6Â +Â 5Â wt% Ti3C2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 40, 5 October 2017, Pages 25285-25293
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 40, 5 October 2017, Pages 25285-25293
نویسندگان
Honghui Cheng, Kang Li, Xiaolu Fan, Haoran Lou, Yanqi Liu, Qi Qi, Jiamin Zhang, Jingjing Liu, Kai Yan, Yao Zhang,