کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705513 | 1497296 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Ti/Hf doping on hydrogen storage performance and mechanical properties of ZrCo compounds: A first principle study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Element doping is an effective way to improve the performance of hydrogen storage. The influences of Ti- and Hf-substituted dopants on the hydrogen storage and mechanical properties in a Zirconium-Cobalt alloy have been investigated by the first principle method. The results show that the Ti and Hf atoms preferentially occupy the Zr atoms to form new Zr7Co8Ti and Zr7Co8Hf compounds. The cohesive energy of Zr7Co8Ti and Zr7Co8Hf are â7.518Â eV/atom and â7.531Â eV/atom, thus Zr7Co8Hf shows a better structural stability than Zr7Co8Ti. The B/G ratio of Zr7Co8Ti and Zr7Co8Hf are 3.42 and 3.89, respectively, which indicates that Ti doping could increase the ductility of the alloy, thus improving the recycling performance of the alloy. The calculation for the electronic structure, mechanical property and structural stability may provide an effective way and theoretical evidence for the better design and optimization of hydrogen storage materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 29, 19 July 2018, Pages 13328-13338
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 29, 19 July 2018, Pages 13328-13338
نویسندگان
Lusheng Wang, Jun Ding, Xia Huang, Kun Song, Bo Liu, Xiangguo Zeng,