کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7708628 | 1497323 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Morphological effects of Nb2O5 on Mg-MgH2 system for thermal energy storage application
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The solar thermal energy could be stored and reused at the desired locations and conditions. The requirement is to develop a suitable medium which could be able to store the solar thermal energy reversibly. Metal-metal hydride system may be one of the options. The high hydrogen storage capacity and fast hydrogenation-dehydrogenation kinetics are the desirable conditions for the practical applications. In this regard, magnesium - magnesium hydride (Mg-MgH2) system has been considered as a potential candidate. The prerequisite is to fine tune the hydrogenation-dehydrogenation kinetics by a suitable additive. Niobium pentoxide (Nb2O5) has been recognized as a suitable additive to improve the hydrogenation-dehydrogenation kinetics. The Nb2O5 is found in various morphological forms, however; all of them are not suitable to enhance the hydrogenation-dehydrogenation kinetics of Mg-MgH2 system. In the current study, it has been found that the mesoporous amorphous Nb2O5 has shown remarkable catalytic property on the Mg-MgH2 system as compared to crystalline Nb2O5 under the similar experimental conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 2, 11 January 2018, Pages 809-816
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 2, 11 January 2018, Pages 809-816
نویسندگان
Sanjay Kumar, Yoshitsugu Kojima, Gautam Kumar Dey,