This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1016/j.jeurceramsoc.2021.05.041 in citations.
Li7La3Zr2O12 solid electrolyte sintered by the ultrafast high-temperature method
Li7La3Zr2O12 solid electrolyte sintered by the ultrafast high-temperature method
All-solid-state Li batteries (ASSLBs) are regarded as the systems of choice for future electrochemical energy storage. Particularly, the garnet Li7La3Zr2O12 (LLZO) is one of the most promising solid electrolytes due to its stability against Li metal. However, its integration into ASSLBs is challengi...
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Personal Name(s): | Ihrig, Martin (Corresponding author) |
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Mishra, Tarini Prasad / Scheld, Walter Sebastian / Häuschen, Grit / Rheinheimer, Wolfgang / Bram, Martin / Finsterbusch, Martin (Corresponding author) / Guillon, Olivier | |
Contributing Institute: |
JARA-ENERGY; JARA-ENERGY Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | Journal of the European Ceramic Society, 41 (2021) 12, S. 6075-6079 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2021
|
DOI: |
10.1016/j.jeurceramsoc.2021.05.041 |
Document Type: |
Journal Article |
Research Program: |
Photovoltaik und Windenergie |
Publikationsportal JuSER |
All-solid-state Li batteries (ASSLBs) are regarded as the systems of choice for future electrochemical energy storage. Particularly, the garnet Li7La3Zr2O12 (LLZO) is one of the most promising solid electrolytes due to its stability against Li metal. However, its integration into ASSLBs is challenging due to high temperature and long dwell time required for sintering. Advanced sintering techniques, such as Ultrafast High-temperature Sintering, have shown to significantly increase the sintering rate. Direct contact to graphite heaters allows sintering of LLZO within 10 s due to extremely high heating rates (up to 104 K min−1) and temperatures up to 1500 °C to a density around 80 %. The LLZO sintered in vacuum and Ar atmosphere has good mechanical stability and high phase purity, but kinetic de-mixing at the grain boundaries was observed. Nevertheless, the Li-ion conductivity of 1 mS cm−1 at 80 °C was comparable to conventional sintering, but lower than for Field-Assisted Sintering Technique/Spark Plasma Sintering. |