This is an overview of new battery tech by Sabine Hossenfelder, who I find is usually informative and amusing.
New Batteries: It’s Not All Hype - YouTube
According to this Gartner expectations chart, silicon is descending into the trough of disillusionment.
In Talga's case, the descent is being accelerated by the mendacity of xenophobic bureaucrats and the tardiness of the courts.
Talnode-Si:
(i) solves the expansion/fracture problem of Si;
(ii) retains much of the energy density benefits of Si,
(iii) can be manufactured into anodes using current machinery,
(iv) provides useful cold weather performance and (v) charging time reduction,
Talnode-Si is a mixture of about 50% Si with graphite/graphene and can be blended with graphite to obtain substantial charge capacity.
A completely new production line design would be needed for solid state batteries.
A problem with the court delay is that it deprives Talga of early mover advantage and gives competitors an opportunity to become established in the market, assuming we eventually get the go-ahead, after which we will need to build the factory and go through acceptance testing. Fortunately, building the factory and acceptance testing should be fairly routine as per (iii) above.