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SUMMARY:Lithium Lanthanide Halides: A New Family of Solid Electrolytes
DTSTART;VALUE=DATE-TIME:20211125T071800Z
DTEND;VALUE=DATE-TIME:20211125T071900Z
DTSTAMP;VALUE=DATE-TIME:20260306T091332Z
UID:indico-contribution-4208@events01.synchrotron.org.au
DESCRIPTION:Speakers: Michael Brennan (University of Sydney)\nThe growing 
 need for safe and reliable energy storage has brought the search for stabl
 e\, high performance solid electrolytes to the forefront of battery materi
 als research. Recently\, it has been shown that lithium lanthanide halides
  (Li$_3$MX$_6$\, M = La-Lu\, X = Cl\, Br\, I) with high ionic conductiviti
 es can be synthesized through mechanochemical and water mediated routes\, 
 creating renewed interest in the family of compounds. However\, Li$_3$MX$_
 6$ compounds have only been synthesised with the late lanthanides (Eu-Lu)\
 , apart from the isolated case of samarium bromide\, and of these compound
 s\, only Li$_3$MX$_6$ (X = Cl\, Br\, I) and Li$_3$YbCl$_6$ have had their 
 crystal structures reported. This leaves a large gap in the literature tha
 t is yet to be explored. The family of Li$_3$MX$_6$ compounds share proper
 ties that make them highly appealing for use in all-solid-state batteries.
   Their structural properties\, namely disordered lithium sites and soft a
 nion lattices\, allow for Li$_3$MX$_6$ compounds to have excellent ionic c
 onductivities of ~1 mS/cm\, comparable to garnet Li$_7$La$_3$Zr$_2$O$_{12}
 $\, one of the most promising solid electrolytes for lithium batteries. Ad
 ditionally\, halides have a favourable decomposition against lithium metal
  electrodes\, forming ionically conductive and electronically insulating L
 iX interphase materials. These interphase materials are stable during cycl
 ing and impede any further electrolyte decomposition\, allowing for excell
 ent cyclic stability. These properties\, along with the large gaps that ar
 e yet to be explored\, make research into Li$_3$MX$_6$ compounds imperativ
 e for the continued development of solid-state electrolytes for all-solid-
 state batteries.\n\nhttps://events01.synchrotron.org.au/event/146/contribu
 tions/4208/
LOCATION:Online
URL:https://events01.synchrotron.org.au/event/146/contributions/4208/
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