All-metal binuclear sandwich complexes Al4Ti2Al4: High capacity hydrogen storage through multicenter bonds
文献类型：期刊论文
| 作者 | Zhu, Haiyan1,2; Han, Ying1; Suo, Bingbing1; Zhai, Gaohong1; Wen, Zhenyi1 |
| 刊名 | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
 |
| 出版日期 | 2017-02-23 |
| 卷号 | 42页码:5440-5446 |
| 关键词 | First-principles prediction All-metal complex Hydrogen storage Binuclear sandwich-type metallocene Hydrogen multicenter bond |
| ISSN号 | 0360-3199 |
| DOI | 10.1016/j.ijhydene.2016.05.242 |
| 英文摘要 | The structure and hydrogen storage capacities of a sandwich-type binuclear complex Al4Ti2Al4 are studied using first-principles calculations. It is found that the aromatic Al-4(2-) unit can be incorporated to sandwich the transition metal Ti atoms forming a stable all metal binuclear compound Al4Ti2Al4. One Al4Ti2Al4 molecule can adsorb 28 hydrogen atoms, which corresponds to a gravimetric storage capacity of 8.24 wt%. This hydrogen storage capacity is above the 2015 target of 5.5% set by the US Department of Energy (DOE) in 2009. Furthermore, the average binding energy is in the ideal range of 0.2-0.6 eV/H-2 and the conjugation between H Al4Ti2Al4 differs according to the adsorbed sites. Meanwhile, we found that multicenter bond is formed between H atoms and Al or Ti atoms during the process of hydrogen adsorption through AdNDP analysis, and it is characterized by specific vibration frequency. Therefore, mode selective vibrational excitation of the IR intense bands may lead to desorption of the absorbed hydrogen form Al8Ti2, enabling efficient reversible hydrogen storage. Last but not least, the binding energies of the multicenter bond between adsorbed I-I atoms and pure Ti atoms are much larger than those of the multicenter bonds related to both Ti and Al atoms. Thereby, the inter-doping of Ti and Al can modulate the binding energy between Ti Al cluster and adsorbed hydrogen. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| WOS关键词 | DENSITY |
| 资助项目 | Chinese Ministry of Science and Technology through the 973-Project[2012CB619401] ; Natural Science Foundation of China[11204239] ; Natural Science Foundation of Shaaxi[2011JM6005] |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000403852600072 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Chinese Ministry of Science and Technology through the 973-Project ; Natural Science Foundation of China ; Natural Science Foundation of Shaaxi |
| 源URL | [http://119.78.100.186/handle/113462/45019]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Zhu, Haiyan |
| 作者单位 | 1.Northwest Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China 2.Xi An Jiao Tong Univ, Sch Life Sci & Technol, Key Lab Biomed Informat Engn, Minist Educ, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Haiyan,Han, Ying,Suo, Bingbing,et al. All-metal binuclear sandwich complexes Al4Ti2Al4: High capacity hydrogen storage through multicenter bonds[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2017,42:5440-5446. |
| APA | Zhu, Haiyan,Han, Ying,Suo, Bingbing,Zhai, Gaohong,&Wen, Zhenyi.(2017).All-metal binuclear sandwich complexes Al4Ti2Al4: High capacity hydrogen storage through multicenter bonds.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,42,5440-5446. |
| MLA | Zhu, Haiyan,et al."All-metal binuclear sandwich complexes Al4Ti2Al4: High capacity hydrogen storage through multicenter bonds".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42(2017):5440-5446. |
入库方式： OAI收割
来源：近代物理研究所
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