| Microstructure and hydrogen storage property of Mg/MWNTs composites | |
| Chen, D; Chen, L; Liu, S; Ma, CX; Chen, DM; Wang, LB | |
| Corresponding Author | Chen, D(dchen@imr.ac.cn) |
| 2004-06-09 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 372Issue:1-2Pages:231-237 |
| Abstract | The Mg-x wt.% multi-walled nanotubes (MWNTs) (x = 5, 20) composites were made by catalytic reacting ball-milling under the hydrogen atmosphere. Their microstructures were characterized by using XRD and TEM-SAED techniques. The absorption/desorption kinetics for Mg/MWNTs were examined by taking the hydriding/dehydriding apparatus. It was found that under 2.0 MPa hydrogen pressure, the maximum hydrogen storage capacities of the composites were both very low and similar at 298 K; at 373, 473 and 553 K, the maximum hydrogen storage capacities of Mg-5 wt.% MWNTs were 5.34, 5.89 and 6.08 wt.%, respectively; but only 2.11, 2.68 and 2.75 wt.% for Mg-20 wt.% MWNTs. Compared with other hydrogen storage composite materials, the Mg-5 wt.% MWNTs not only keeps the maximum hydrogen storage capacities better but also has good hydrogen absorption/desorption rates. It absorbed 4.27, 4.86 wt.% (80% maximum hydrogen storage capacity) within 15 and 1 min at 373 and 553 K under 2.0 MPa, while it desorbed 3.62 wt.% within 30 min at 473 K in vacuum. The carbon component (the broken MWNTs) in the composite may play an important role in the hydrogen uptake and release. A favorable discussion was given in this paper. (C) 2003 Elsevier B.V. All rights reserved. |
| Keyword | Mg/MWNTs composite catalytic reacting ball-milling microstructure hydrogen absorption/desorption kinetics |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000221704800046 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/81130 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Chen, D |
| Affiliation | 1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 2.NE Univ Technol, Coll Sci, Shenyang 110006, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, D,Chen, L,Liu, S,et al. Microstructure and hydrogen storage property of Mg/MWNTs composites[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2004,372(1-2):231-237. |
| APA | Chen, D,Chen, L,Liu, S,Ma, CX,Chen, DM,&Wang, LB.(2004).Microstructure and hydrogen storage property of Mg/MWNTs composites.JOURNAL OF ALLOYS AND COMPOUNDS,372(1-2),231-237. |
| MLA | Chen, D,et al."Microstructure and hydrogen storage property of Mg/MWNTs composites".JOURNAL OF ALLOYS AND COMPOUNDS 372.1-2(2004):231-237. |
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