کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7709064 | 1497327 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study the effect of SrFe12O19 on MgH2/LiAlH4 composite for solid-state hydrogen storage
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study the effect of SrFe12O19 on MgH2/LiAlH4 composite for solid-state hydrogen storage Study the effect of SrFe12O19 on MgH2/LiAlH4 composite for solid-state hydrogen storage](/preview/png/7709064.png)
چکیده انگلیسی
The MgH2/LiAlH4 destabilised system was studied experimentally using the method of ball milling. The desorption/absorption performances and reaction mechanism of the 4MgH2 + LiAlH4 composite system with SrFe12O19 additive have been investigated for the first time. Analysis of the temperature-programme-desorption showed that the 5 wt% SrFe12O19-doped 4MgH2 + LiAlH4 composite started to release hydrogen at 80 °C and 260 °C for the first two desorption stages, which were reduced by 40 °C and 10 °C as compared to the undoped composite. The sorption kinetics of 5 wt% SrFe12O19-doped 4MgH2 + LiAlH4 were also improved as compared to the undoped 4MgH2 + LiAlH4. Activation energy calculation based on the Kissinger plot displayed that the apparent activation energy for the decomposition of MgH2-relevant had been reduced from 121 kJ/mol for the undoped composite to 104 kJ/mol for the composite with SrFe12O19. The X-ray diffraction results suggested that the new species of Al2Sr and Li2Fe3O4 that were formed in situ during the heating process were believed to play a catalytic role, thus responsible for the enhancement of the hydrogen storage properties of 4MgH2 + LiAlH4 composite system with SrFe12O19.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 50, 14 December 2017, Pages 29830-29839
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 50, 14 December 2017, Pages 29830-29839
نویسندگان
N.N. Sulaiman, M. Ismail,