Djenadic, Ruzica and Botros, Miriam and Benel, Cahit and Clemens, Oliver and Indris, Sylvio and Choudhary, Ahmad and Bergfeldt, Thomas and Hahn, Horst (2014):
Nebulized spray pyrolysis of Al-doped Li7La3Zr2O12 solid electrolyte for battery applications.
In: Solid State Ionics, 263, pp. 49-56. Elsevier Science Publishing, ISSN 01672738,
[Article]
Abstract
Nebulized spray pyrolysis followed by consolidation and sintering was used for the first time to prepare Al-doped garnet-based Li7−3xLa3Zr2AlxO12 (x = 0–0.25) (LLZO) ultra-fine grained ceramics. The structural changes from the tetragonal (x = 0), via a mixture of the cubic and the tetragonal (x = 0.07, 0.10) to the cubic modification (x = 0.15–0.25) were observed. 27Al NMR study showed that aluminum occupy the tetrahedral 24d lithium sites. Despite their low relative density (47–56%), preliminary ionic conductivities of the LLZO ceramics, were found to be 1.2 · 10− 6 S cm− 1 and 4.4 · 10− 6 S cm− 1 for tetragonal and cubic LLZO at room temperature, with activation energies of 0.55 eV and 0.49 eV, respectively.
| Item Type: | Article |
|---|---|
| Erschienen: | 2014 |
| Creators: | Djenadic, Ruzica and Botros, Miriam and Benel, Cahit and Clemens, Oliver and Indris, Sylvio and Choudhary, Ahmad and Bergfeldt, Thomas and Hahn, Horst |
| Title: | Nebulized spray pyrolysis of Al-doped Li7La3Zr2O12 solid electrolyte for battery applications |
| Language: | English |
| Abstract: | Nebulized spray pyrolysis followed by consolidation and sintering was used for the first time to prepare Al-doped garnet-based Li7−3xLa3Zr2AlxO12 (x = 0–0.25) (LLZO) ultra-fine grained ceramics. The structural changes from the tetragonal (x = 0), via a mixture of the cubic and the tetragonal (x = 0.07, 0.10) to the cubic modification (x = 0.15–0.25) were observed. 27Al NMR study showed that aluminum occupy the tetrahedral 24d lithium sites. Despite their low relative density (47–56%), preliminary ionic conductivities of the LLZO ceramics, were found to be 1.2 · 10− 6 S cm− 1 and 4.4 · 10− 6 S cm− 1 for tetragonal and cubic LLZO at room temperature, with activation energies of 0.55 eV and 0.49 eV, respectively. |
| Journal or Publication Title: | Solid State Ionics |
| Journal volume: | 263 |
| Publisher: | Elsevier Science Publishing |
| Uncontrolled Keywords: | Solid electrolyte, Garnet, All-solid-state lithium battery, Ionic conductivity, Nanocrystalline, Doping |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Materialdesign durch Synthese 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials |
| Date Deposited: | 16 Feb 2015 12:53 |
| Official URL: | http://dx.doi.org/10.1016/j.ssi.2014.05.007 |
| Identification Number: | doi:10.1016/j.ssi.2014.05.007 |
| Funders: | The authors would like to thank Helmholtz Association for the financial support., The support of the Karlsruhe Nano Micro Facility (KNMF) and the Helmholtz Portfolio Project “Electrochemical Storage in System - Reliability and Integration” is gratefully acknowledged. |
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