Reversible hydrogen storage from 6LiBH4–MCl3 (M = Ce, Gd) composites by in-situ formation of MH2
| Autor: | L. Fernández Albanesi, Fabiana C. Gennari, P. Arneodo Larochette, Julián Puszkiel |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Composite number Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Decomposition Catalysis chemistry.chemical_compound Hydrogen storage Fuel Technology Differential scanning calorimetry Metal halides chemistry Dehydrogenation Composite material |
| Zdroj: | International Journal of Hydrogen Energy. 36:563-570 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2010.10.010 |
| Popis: | Different destabilized LiBH 4 systems with several interacting components are being explored for hydrogen storage applications. In this study, hydrogen sorption properties of as-milled 6LiBH 4 –MCl 3 composites (M = Ce, Gd) are investigated by X-ray diffraction, differential scanning calorimetry and thermovolumetric measurements. The chemical interaction between metal halides and LiBH 4 decreases the dehydrogenation temperature in comparison with as-milled LiBH 4 . Hydrogen release starts at 220 °C from the decomposition of M(BH 4 ) 3 formed during milling and proceeds through destabilization of LiBH 4 by in-situ formed MH 2 . The dehydrogenation products CeB 6 –LiH and GdB 4 –LiH can be rehydrided under moderate conditions, i.e 400 °C and 6.0 MPa of hydrogen pressure for 2 h without catalyst. A new 6LiBH 4 –CeCl 3 –3LiH composite shows promissory hydrogen storage properties via the formation by milling of CeH 2+x . Our study is the first work about reversible hydrogen storage in LiBH 4 –MCl 3 composites destabilized by in-situ formed MH 2 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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