کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148340 | 1497365 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Significant improvement in the dehydriding properties of perovskite hydrides, NaMgH3, by doping with K2TiF6
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Significant improvement in the dehydriding properties of perovskite hydrides, NaMgH3, by doping with K2TiF6 Significant improvement in the dehydriding properties of perovskite hydrides, NaMgH3, by doping with K2TiF6](/preview/png/5148340.png)
چکیده انگلیسی
In this study, perovskite hydrides (NaMgH3) were synthesized in the presence and absence of a dopant, e.g., K2TiF6, by high-energy ball milling. Clear lattice distortion was observed in K2TiF6-doped NaMgH3 as compared to pristine NaMgH3. The doped sample exhibited better dehydriding properties, and the onset desorption temperature significantly decreased from 580Â K to 328Â K. The maximum amount of desorbed hydrogen was approximately 3.8Â wt% at 638Â K, and approximately 90% of hydrogen was desorbed within 20Â min. Differential scanning calorimetry results indicated that the activation energy for the two steps in the decomposition of NaMgH3 decreases by doping with K2TiF6. This result suggested that the lattice distortion and low decomposition energy of the NaMgH3 phase, caused by the introduction of the K2TiF6 dopant, result in improved dehydriding properties for NaMgH3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 12, 23 March 2017, Pages 8554-8559
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 12, 23 March 2017, Pages 8554-8559
نویسندگان
Zhongmin Wang, Song Tao, Jianqiu Deng, Huaiying Zhou, Qingrong Yao,