dc.contributor.author |
Sarac, B. |
|
dc.contributor.author |
Ivanov, Y. P. |
|
dc.contributor.author |
Karazehir, T. |
|
dc.contributor.author |
Mühlbacher, M. |
|
dc.contributor.author |
Kaynak, B. |
|
dc.contributor.author |
Greer, A. L. |
|
dc.contributor.author |
Sarac, A. S. |
|
dc.contributor.author |
Eckert, J. |
|
dc.date.accessioned |
2019-12-23T13:08:50Z |
|
dc.date.available |
2019-12-23T13:08:50Z |
|
dc.date.issued |
2019 |
|
dc.identifier.citation |
Sarac, B., Ivanov, Y. P., Karazehir, T., Mühlbacher, M., Kaynak, B., Greer, A. L., . . . Eckert, J. (2019). Ultrahigh hydrogen-sorbing palladium metallic-glass nanostructures. Materials Horizons, 6(7), 1481-1487. doi:10.1039/c9mh00316a |
tr_TR |
dc.identifier.issn |
20516347 |
|
dc.identifier.uri |
http://openaccess.adanabtu.edu.tr:8080/xmlui/handle/123456789/694 |
|
dc.identifier.uri |
https://doi.org/10.1039/C9MH00316A |
|
dc.description |
WOS indeksli yayınlar koleksiyonu. / WOS indexed publications collection. |
en |
dc.description.abstract |
Pd-Based amorphous alloys can be used for hydrogen energy-related applications owing to their excellent sorption capacities. In this study, the sorption behaviour of dc magnetron-sputtered and chronoamperometrically-saturated Pd-Si-Cu metallic-glass (MG) nanofilms is investigated by means of aberration-corrected high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy, and electrochemical techniques. The volume expansion of ΔV = 10.09 Å3 of a palladium hydride unit cell obtained from HRTEM images due to the hydrogenation of the Pd-MG nanofilms is 1.65 times larger than ΔV of the Pd-polycrystalline counterpart loaded under the same conditions. Determined by scanning transmission electron microscopy-high annular dark-field imaging and electron energy loss spectroscopy, the huge difference between the two Pd-based systems is accounted for by the "nanobubbles" originating from hydrogenation, which generate active sites for the formation and expansion of spatially dispersed palladium hydride nanocrystals. A remarkable difference in the hydrogen sorption capacity is measured by electrochemical impedance spectroscopy compared to the Pd polycrystal nanofilms particularly in the α and β regions, where the maximum hydrogen to palladium ratio obtained from a combination of chronoamperometry and cyclic voltammetry is 1.56 and 0.61 for the MG and Pd-polycrystal nanofilms, respectively. The findings place Pd-MGs among suitable material candidates for future energy systems. |
tr_TR |
dc.language.iso |
en |
tr_TR |
dc.publisher |
Materials Horizons / Royal Society of Chemistry |
tr_TR |
dc.relation.ispartofseries |
2019;Volume 6, Issue 7 |
|
dc.subject |
Amorphous alloys |
tr_TR |
dc.subject |
Chronoamperometry |
|
dc.subject |
Cyclic voltammetry |
|
dc.subject |
Electrochemical impedance spectroscopy |
|
dc.subject |
Electron energy levels |
|
dc.subject |
Electron energy loss spectroscopy |
|
dc.subject |
Electron scattering |
|
dc.subject |
Energy dissipation |
|
dc.subject |
Expansion |
|
dc.subject |
Glass |
|
dc.subject |
High resolution transmission electron microscopy |
|
dc.subject |
Hydrides |
|
dc.subject |
Hydrogenation |
|
dc.subject |
Metallic glass |
|
dc.subject |
Palladium alloys |
|
dc.subject |
Polycrystals |
|
dc.subject |
Scanning electron microscopy |
|
dc.subject |
Sorption |
|
dc.subject |
X ray photoelectron spectroscopy |
|
dc.subject |
Aberration-corrected |
|
dc.subject |
Annular dark-field imaging |
|
dc.subject |
Electrochemical techniques |
|
dc.subject |
Hydrogen sorption capacity |
|
dc.subject |
Material candidate |
|
dc.subject |
Palladium hydride |
|
dc.subject |
Scanning transmission electron microscopy |
|
dc.subject |
Sorption capacities |
|
dc.subject |
Palladium compounds |
|
dc.title |
Ultrahigh hydrogen-sorbing palladium metallic-glass nanostructures |
tr_TR |
dc.type |
Article |
tr_TR |