کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1270000 | 1497414 | 2016 | 7 صفحه PDF | دانلود رایگان |
• Hydrogen storage properties of the KLi3(NH2)4-4LiH system was first examined.
• The KLi3(NH2)4-4LiH system exhibits a superior cycling stability.
• Mixing of potassium cations into LiNH2 can result in destabilization of LiNH2.
• Dehydrogenation kinetics of the Li–N–H system is improved by mixing potassium.
In this study, we first examined the hydrogen release, uptake, and reversibility properties of the KLi3(NH2)4-4LiH system and elucidated the influence of potassium cations' substitution into LiNH2 on the hydrogen storage properties of the LiNH2-LiH composite. Our results show that mixing of the potassium cations into LiNH2 can destabilize LiNH2, therefore decreasing the hydrogen desorption temperature and enhancing hydrogen desorption rate of the LiNH2-LiH system. Notably, the KLi3(NH2)4-4LiH composite exhibits a superior cycling stability compared with the LiNH2-LiH composite prepared under the same condition.
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 11, 22 March 2016, Pages 5371–5377