Journal article
Nanoscale structural characterization of Mg(NH3)6Cl2 during NH3 desorption: An in situ small angle X-ray scattering study
Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Computational Atomic-scale Materials Design, Department of Physics, Technical University of Denmark4
Department of Physics, Technical University of Denmark5
Solar Energy Programme, Risø National Laboratory for Sustainable Energy, Technical University of Denmark6
University of Copenhagen7
X-ray Crystallography, Department of Chemistry, Technical University of Denmark8
Department of Chemistry, Technical University of Denmark9
Complex metal hydrides progressively display improved hydrogen storage capacity, but they are still far from fulfilling the requirements of the transport sector. Recently, indirect storage of hydrogen as ammonia in Mg(NH3)(6)Cl-2 has shown impressive capacity and reversibility. Here, we present an in situ nanoscale structural characterization of the thermal decomposition of Mg(NH3)(6)Cl-2 using small angle X-ray scattering (SAXS).
We observe the growth of polydisperse spherical Mg(NH3)(2)Cl-2 crystallites forming a skeletal structure, the subsequent agglomeration of MgCl2 and formation of a nanoscale porosity consisting of 25-30 nm wide channels, which may account for the exceptional fast reloading of the material. (c) 2007 Elsevier B.V.
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| Language: | English |
|---|---|
| Year: | 2007 |
| Pages: | 255-260 |
| ISSN: | 18734448 and 00092614 |
| Types: | Journal article |
| DOI: | 10.1016/j.cplett.2007.05.001 |
| ORCIDs: | Hansen, Heine Anton , Andreasen, Jens Wenzel , Nielsen, Martin Meedom , Ståhl, Kenny , Vegge, Tejs and 0000-0002-7963-3649 |
