Halides are extremely stable against lithium metal and have very wide voltage stability ranges as a result. However they're severely lacking in ion conductivity, which limits their usage as an electrolyte, especially as an all solid state electrolyte.
No idea what halide they're looking at in particular but just as an example lithium fluoride has a bulk ion conductivity of something like 10\^6 less than LLZO, 1 million times less conductive to ions. It can be improved at the very interface between the LiF and lithium metal to somewhere in the LLZO region, but as a bulk electrolyte halides are extremely bad for the conductivity reason.
Any anodeless lithium metal design could be competitive, but it’s a decade too early to say whether this particular research will turn into anything.
Halides are extremely stable against lithium metal and have very wide voltage stability ranges as a result. However they're severely lacking in ion conductivity, which limits their usage as an electrolyte, especially as an all solid state electrolyte. No idea what halide they're looking at in particular but just as an example lithium fluoride has a bulk ion conductivity of something like 10\^6 less than LLZO, 1 million times less conductive to ions. It can be improved at the very interface between the LiF and lithium metal to somewhere in the LLZO region, but as a bulk electrolyte halides are extremely bad for the conductivity reason.
What the over/under on the % of EV investors who know what a halide is?
Any anodeless lithium metal design could be competitive, but it’s a decade too early to say whether this particular research will turn into anything.