Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry

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dc.identifier.uri Kuhn, Alexander Choi, Joon-Yong Robben, Lars Tietz, Frank Wilkening, Martin Heitjans, Paul 2017-11-10T18:14:25Z 2017-11-10T18:14:25Z 2012
dc.identifier.citation Kuhn, A.; Choi, J.-Y.; Robben, L.; Tietz, F.; Wilkening, M.; Heitjans, P.: Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry. In: Zeitschrift für Physikalische Chemie 226 (2012), S. 525-537. DOI:
dc.description.abstract Lithium-ion dynamics in the garnet-type solid electrolyte “Li7La3Zr2O12” (LLZ) crystallizing with cubic symmetry was probed by means of variable-temperature 7Li NMR spectroscopy and ac impedance measurements. Li jump rates of an Al-containing sample follow Arrhenius behaviour being characterized by a relatively high activation energy of 0.54(3) eV and a pre-exponential factor of 2.2(5) × 1013 s-1. The results resemble those which were quite recently obtained for an Al-free LLZ sample crystallizing, however, with tetragonal symmetry. Hence, most likely, the significantly higher Li conductivity previously reported for a cubic LLZ sample cannot be ascribed solely to the slight structural distortions accompanying the change of the crystal symmetry. Here, even Al impurities, acting as stabilizer for the cubic polymorph at room temperature, do not lead to the high ion conductivity reported previously. © by Oldenbourg Wissenschaftsverlag, München. eng
dc.language.iso eng
dc.publisher Berlin : Walter de Gruyter
dc.relation.ispartofseries Zeitschrift für Physikalische Chemie 226 (2012)
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject Garnets eng
dc.subject Lithium ion dynamics eng
dc.subject NMR eng
dc.subject Solid electrolytes eng
dc.subject Spin-lattice relaxation eng
dc.subject.ddc 540 | Chemie ger
dc.subject.ddc 530 | Physik ger
dc.title Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry
dc.type article
dc.type Text
dc.relation.issn 09429352
dc.bibliographicCitation.volume 226
dc.bibliographicCitation.firstPage 525
dc.bibliographicCitation.lastPage 537
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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