Enhanced hydrogen storage properties of magnesium by the synergic catalytic effect of TiH1.971 and TiH1.5 nanoparticles at room temperature
文献类型：期刊论文
| 作者 | Liu, Tong1; Chen, Chunguang1; Wang, Fan1; Li, Xingguo2 |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2014-12-01 |
| 卷号 | 267页码:69-77 |
| 关键词 | Magnesium Titanium Hydride Nanocomposite Hydrogen Storage Kinetics |
| ISSN号 | 0378-7753 |
| DOI | 10.1016/j.jpowsour.2014.05.066 |
| 英文摘要 | In order to improve the hydrogen sorption kinetics of Mg at room temperature, the Mg-9.2wt%TiH1.971-3.7wt%TiH1.5 nanocomposite is successfully prepared by hydrogen plasma-metal reaction (HPMR) method and hydrogenation/dehydrogenation at 673 K. The Mg nanoparticles are hexagonal in shape with the size in the range of 50-190 nm. The spherical Ti hydrides nanoparticles of about 13 nm are uniformly dispersed on the surface of Mg nanoparticles. During hydrogenation/dehydrogenation cycle, the Ti hydrides nanoparticles restrain the growth of Mg nanopartides. The Mg-TiH1.971-TiH1.5 nanocomposite quickly absorbs 4.3 wt% H-2 in 10 min at room temperature and reaches a saturation value of 5.0 wt% in 60 min. The apparent activation energies for hydrogen absorption and desorption are 12.5 and 46.2 kJ mol(-1), respectively. The improved kinetics and reduced activation energy are explained in terms of the nanostructure of Mg and the synergic catalytic effect of TiH1.971-TiH1.5 nanoparticles. (C) 2014 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000339601800010 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/52225]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Tong |
| 作者单位 | 1.Beihang Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Tong,Chen, Chunguang,Wang, Fan,et al. Enhanced hydrogen storage properties of magnesium by the synergic catalytic effect of TiH1.971 and TiH1.5 nanoparticles at room temperature[J]. JOURNAL OF POWER SOURCES,2014,267:69-77. |
| APA | Liu, Tong,Chen, Chunguang,Wang, Fan,&Li, Xingguo.(2014).Enhanced hydrogen storage properties of magnesium by the synergic catalytic effect of TiH1.971 and TiH1.5 nanoparticles at room temperature.JOURNAL OF POWER SOURCES,267,69-77. |
| MLA | Liu, Tong,et al."Enhanced hydrogen storage properties of magnesium by the synergic catalytic effect of TiH1.971 and TiH1.5 nanoparticles at room temperature".JOURNAL OF POWER SOURCES 267(2014):69-77. |
入库方式： OAI收割
来源：化学研究所
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