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| Hauptseite > Publikationsdatenbank > Evaluation of Scalable Synthesis Methods for Aluminum-Substituted Li7La3Zr2O12 Solid Electrolytes > print |
| Hauptseite > Publikationsdatenbank > Evaluation of Scalable Synthesis Methods for Aluminum-Substituted Li7La3Zr2O12 Solid Electrolytes > print |
| 001 | 902373 | ||
| 005 | 20240711085639.0 | ||
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| 100 | 1 | _ | |a Mann, Markus |0 P:(DE-Juel1)179291 |b 0 |
| 245 | _ | _ | |a Evaluation of Scalable Synthesis Methods for Aluminum-Substituted Li7La3Zr2O12 Solid Electrolytes |
| 260 | _ | _ | |a Basel |c 2021 |b MDPI |
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| 520 | _ | _ | |a Solid electrolyte is the key component in all-solid-state batteries (ASBs). It is required in electrodes to enhance Li-conductivity and can be directly used as a separator. With its high Li-conductivity and chemical stability towards metallic lithium, lithium-stuffed garnet material Li7La3Zr2O12 (LLZO) is considered one of the most promising solid electrolyte materials for high-energy ceramic ASBs. However, in order to obtain high conductivities, rare-earth elements such as tantalum or niobium are used to stabilize the highly conductive cubic phase. This stabilization can also be obtained via high levels of aluminum, reducing the cost of LLZO but also reducing processability and the Li-conductivity. To find the sweet spot for a potential market introduction of garnet-based solid-state batteries, scalable and industrially usable syntheses of LLZO with high processability and good conductivity are indispensable. In this study, four different synthesis methods (solid-state reaction (SSR), solution-assisted solid-state reaction (SASSR), co-precipitation (CP), and spray-drying (SD)) were used and compared for the synthesis of aluminum-substituted LLZO (Al:LLZO, Li6.4Al0.2La3Zr2O12), focusing on electrochemical performance on the one hand and scalability and environmental footprint on the other hand. The synthesis was successful via all four methods, resulting in a Li-ion conductivity of 2.0–3.3 × 10−4 S/cm. By using wet-chemical synthesis methods, the calcination time could be reduced from two calcination steps for 20 h at 850 °C and 1000 °C to only 1 h at 1000 °C for the spray-drying method. We were able to scale the synthesis up to a kg-scale and show the potential of the different synthesis methods for mass production. |
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| 700 | 1 | _ | |a Finsterbusch, Martin |0 P:(DE-Juel1)145623 |b 3 |e Corresponding author |
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| 773 | _ | _ | |a 10.3390/ma14226809 |g Vol. 14, no. 22, p. 6809 - |0 PERI:(DE-600)2487261-1 |n 22 |p 6809 - |t Materials |v 14 |y 2021 |x 1996-1944 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/902373/files/materials-14-06809.pdf |y OpenAccess |
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