95
Sineng Electric launches world’s largest sodium-ion battery storage project
(www.pv-magazine.com)
this post was submitted on 09 Aug 2024
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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.
Depends on how close they can be made in watt-hours per kilo. They might be good enough for vehicles once the technology comes into reasonably widespread use, while avoiding a lot of the issues with trying to acquire sufficient lithium.
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.
I talked to an energy engineer about it, and I'm pretty sure it's what he said. Would also make sense when China use it like this.