muhyb@programming.dev 1 week ago
Obviously they’re not as efficient as lithium-ion because the atom size of sodium is bigger than lithium. However while lithium is scarce, sodium is everywhere. While it’s not so effective for small devices, they’re fine for big battery storages. If true, being able to charge in 25 minutes is great.
ColeSloth@discuss.tchncs.de 6 days ago
They’re far more useful as stationary power supplies, so really, it doesn’t matter much in most cases that it can fully charge in even 2 hours.
el_bhm@lemm.ee 6 days ago
It depends how much power they can dump in 1 second. If more or the same as lion tech stacks then they will be viable for EVs.
Another thing. Fast charging stationary power might be important for a distributed power grid. Currently one of the problems in some implementations is that excess power from clients cant even be accepted. Fast charging storage might be important for accepting large excess coming in from the grid.
ColeSloth@discuss.tchncs.de 6 days ago
It’s not for any of the above. Grid systems will have many batteries and not need excessively fast charge/discharge rates. Evs still can’t really use them because they’re simply too heavy for the energy density. Longer range evs already need beef8er suspensions and chew through tires from the weight. Going even heavier with even larger batteries isn’t very feasible compared to the alternatives.