| Online-Ressource |
Verfasst von: | Kammerer, Jochen [VerfasserIn]  |
| Duan, Xiaoyang [VerfasserIn]  |
| Neubrech, Frank [VerfasserIn]  |
| Schröder, Rasmus R. [VerfasserIn]  |
| Liu, Na [VerfasserIn]  |
| Pfannmöller, Martin [VerfasserIn]  |
Titel: | Stabilizing γ-MgH2 at nanotwins in mechanically constrained nanoparticles |
Verf.angabe: | Jochen A. Kammerer, Xiaoyang Duan, Frank Neubrech, Rasmus R. Schröder, Na Liu, and Martin Pfannmöller |
E-Jahr: | 2021 |
Jahr: | February 8, 2021 |
Umfang: | 9 S. |
Fussnoten: | Im Titel ist 2 bei "γ-MgH" tiefgestellt ; Gesehen am 14.09.2021 |
Titel Quelle: | Enthalten in: Advanced materials |
Ort Quelle: | Weinheim : Wiley-VCH, 1989 |
Jahr Quelle: | 2021 |
Band/Heft Quelle: | 33(2021), 11, Artikel-ID 2008259, Seite 1-9 |
ISSN Quelle: | 1521-4095 |
Abstract: | Reversible hydrogen uptake and the metal/dielectric transition make the Mg/MgH2 system a prime candidate for solid-state hydrogen storage and dynamic plasmonics. However, high dehydrogenation temperatures and slow dehydrogenation hamper broad applicability. One promising strategy to improve dehydrogenation is the formation of metastable γ-MgH2. A nanoparticle (NP) design, where γ-MgH2 forms intrinsically during hydrogenation is presented and a formation mechanism based on transmission electron microscopy results is proposed. Volume expansion during hydrogenation causes compressive stress within the confined, anisotropic NPs, leading to plastic deformation of β-MgH2 via (301)β twinning. It is proposed that these twins nucleate γ-MgH2 nanolamellas, which are stabilized by residual compressive stress. Understanding this mechanism is a crucial step toward cycle-stable, Mg-based dynamic plasmonic and hydrogen-storage materials with improved dehydrogenation. It is envisioned that a more general design of confined NPs utilizes the inherent volume expansion to reform γ-MgH2 during each rehydrogenation. |
DOI: | doi:10.1002/adma.202008259 |
URL: | kostenfrei: Volltext: https://doi.org/10.1002/adma.202008259 |
| kostenfrei: Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.202008259 |
| DOI: https://doi.org/10.1002/adma.202008259 |
Datenträger: | Online-Ressource |
Sprache: | eng |
Sach-SW: | electron beam lithography |
| hydrogen storage |
| metastable |
| MgH2 |
| nanomaterials |
| plasmonics |
| transmission electron microscopy (TEM) |
K10plus-PPN: | 1770108351 |
Verknüpfungen: | → Zeitschrift |
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Lokale URL UB: | Zum Volltext |
Stabilizing γ-MgH2 at nanotwins in mechanically constrained nanoparticles / Kammerer, Jochen [VerfasserIn]; February 8, 2021 (Online-Ressource)