Amorphous thin film ionic conductors of mLiF.nAlF3

Predicted structure, thermo-mechanical properties and Li ion transport in LiAlF4 glass

“…The cationic conductivity of LiAlF 4 is high, reported to lie between 10 − 6 and 10 − 4 S m − 1 at room temperature [1,3]. This makes it a candidate material for use as a surface modifying coating for lithium ion battery electrodes [4], where the coating is intended to protect the active material in the electrodes from the surrounding organic electrolyte, whilst not posing a barrier to ionic conduction.…”

“…In order to promote a better understanding of Li-Al-F based materials, we have performed molecular dynamics (MD) simulations of the glass-like compound LiAlF 4 (which has already been fabricated experimentally by thermal evaporation of LiF and AlF 3 [1]). We investigate structural parameters such as the distribution of Li-F, Al-F and F-F interatomic separations, the number of bridging F ions between Al ions and physical properties such as thermal expansion, glass transition temperature and perhaps most significantly for its use in battery applications, Li ion conductivity.…”

“…Transparent amorphous thin film conductors formed by fluoride evaporation were originally investigated in the early 1980s for use in electrochromic devices [1][2][3]. With the increasing deployment of lithium battery technology, they may also become relevant due to their high cationic conductivity [4].…”

Advances in Deposition of Main‐Group Metal Oxides and Rare‐Earth Oxides from Metal Enolates

“…LiF films are of importance as optical materials, due to their low refractive index and large bandgap 4,5 . A further application is as an ion conductor [6][7][8][9][10] .…”

“…The film composition could be controlled by the number of separate Li 2 CO 3 and La 2 O 3 deposition cycles 2 . Furthermore, [Li(thd)] was successfully applied as a metal-organic chemical vapor deposition (MOCVD) precursor together with [Nb(OEt) 5 6 ] also formed 13 .…”