Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH(2))(2) with Li(3)N
文献类型：期刊论文
| 作者 | L. P. Ma ; H. B. Dai ; Z. Z. Fang ; X. D. Kang ; Y. Liang ; P. J. Wang ; P. Wang ; H. M. Cheng |
| 刊名 | Journal of Physical Chemistry C
 |
| 出版日期 | 2009 |
| 卷号 | 113期号:22页码:9944-9949 |
| 关键词 | complex hydrides ultrafast reaction amide improvement desorption linh2 destabilization mechanism mixtures imides |
| ISSN号 | 1932-7447 |
| 中文摘要 | The Li-Mg-N-H system was prepared by reacting magnesium amide [Mg(NH(2))(2)] with lithium nitride (Li(3)N) and investigated with regard to the hydrogen storage properties. Our study shows that the present method is superior to the conventional route in enhancing the reversible dehydrogenation properties. Through optimizing the Li(3)N:Mg(NH(2))(2) ratio in the starting materials, the reversible capacity of U-Mg-N-H system increases to 4.9 wt %, 18% higher than that typically obtained from the Mg(NH(2))(2) + 2LiH mixture at 200 degrees C. Furthermore, increasing the Li(3)N:Mg(NH(2))(2) ratio is effective for mitigating the ammonia release from thus-prepared samples. Combined property/structure investigations indicate that the obtained enhancements should be ascribed to the effects of LiNH(2) and LiH that were in situ generated from the excess Li(3)N. LiNH(2) may promote the dehydrogenation reaction via seeding the reaction intermediate. The concurrently generated LiH acts as an effective ammonia trapping agent. These findings highlight the potential of "intermediate seeding" as a strategy to enhance the reversible hydrogen storage properties of metal-N-H systems. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32180]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. P. Ma,H. B. Dai,Z. Z. Fang,et al. Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH(2))(2) with Li(3)N[J]. Journal of Physical Chemistry C,2009,113(22):9944-9949. |
| APA | L. P. Ma.,H. B. Dai.,Z. Z. Fang.,X. D. Kang.,Y. Liang.,...&H. M. Cheng.(2009).Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH(2))(2) with Li(3)N.Journal of Physical Chemistry C,113(22),9944-9949. |
| MLA | L. P. Ma,et al."Enhanced Hydrogen Storage Properties of Li-Mg-N-H System Prepared by Reacting Mg(NH(2))(2) with Li(3)N".Journal of Physical Chemistry C 113.22(2009):9944-9949. |
入库方式： OAI收割
来源：金属研究所
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