Wikipedia has a decent (albeit somewhat outdated?) comparison with other battery types.
Seems like sodium-ion batteries are somewhat cheaper, require more space and have lower usable cycles.
Probably also just aa important to note that sodium is much more readily available than lithium and doesn’t require geopolitical wars or slave-labor to acquire.
What’s interesting to me is the power to weight ratio. Sodium-Ion is at ~1000 W/Kg vs Li-Ion at ~175-425 W/Kg. EVs could maybe have less weight and cost in the future because of this.
Sodium-ion has a lower power to weight ratio. Lithium is better in this regard.
Sodium-ion is used on the ground as storage for this reason. It’s not to be beneficial to put it into a moveable object.
According to a paper published in 2020 here, the specific energy and energy density are in line with what you are saying. But according to the article that Wikipedia cited here, sodium batteries show the opposite.
You’re probably right but it looks like there’s conflicting info about this currently.
