Formation and hydrogen storage properties of in situ prepared Mg–Cu alloy nanoparticles by arc discharge
| Autor: | Dong Xl, Bo Lu, J.P. Lei, Huang H, M.K. Lei, Chuang Dong, Guozhong Cao, Qing Wang, Jiahui Sun |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Argon Hydrogen Renewable Energy Sustainability and the Environment Metallurgy Alloy Evaporation Intermetallic Energy Engineering and Power Technology chemistry.chemical_element Nanoparticle engineering.material Condensed Matter Physics Electric arc Hydrogen storage Fuel Technology Chemical engineering chemistry engineering |
| Zdroj: | International Journal of Hydrogen Energy. 34:8127-8134 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2009.07.092 |
| Popis: | Mg–Cu alloy nanoparticles were in situ prepared by a physical vapor condensation method (arc discharge) in a mixture of argon and hydrogen. Four crystalline phases, Mg, Mg2Cu, MgCu2 and MgO, were formed simultaneously during the arc-discharge evaporation. Detailed experiments revealed that nanostructured hydrogen-active phases of Mg2Cu and Mg exhibit enhanced hydrogen absorption kinetics possibly due to the small grain size and surface defects. The maximal hydrogen storage contents of Mg–Cu alloy nanoparticles can reach 2.05 ± 0.10 wt% at 623 K. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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