TY  - JOUR
AU  - Ihrig, Martin
AU  - Mishra, Tarini Prasad
AU  - Scheld, Walter Sebastian
AU  - Häuschen, Grit
AU  - Rheinheimer, Wolfgang
AU  - Bram, Martin
AU  - Finsterbusch, Martin
AU  - Guillon, Olivier
TI  - Li7La3Zr2O12 solid electrolyte sintered by the ultrafast high-temperature method
JO  - Journal of the European Ceramic Society
VL  - 41
IS  - 12
SN  - 0955-2219
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2021-02423
SP  - 6075-6079
PY  - 2021
N1  - Die letzte Version existiert nur in der Fomatierung des Verlages, daher kein Post Print
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000661435800002
DO  - DOI:10.1016/j.jeurceramsoc.2021.05.041
UR  - https://juser.fz-juelich.de/record/892896
ER  -