They’re not as developed as ion cells but are already showing energy density on par with lifepo4 cells and about half what top ion semi-power cells hold
Molicel p42
4.7 grams per watthour
https://www.molicel.com/wp-content/uploads/INR21700P42A-V4-80092.pdf
8.9 grams per watthour
9.2 grams per watthour
Lifepo4
(Not the fairest comparison with different cell sizes though… but got u looking)
Much cheaper.
Environmentally friendly
(I think for real).
No fire hazard.
Maybe can use as seasoning
Dont forget the fact that they can be discharged to 0V without taking damage. (and then be carefully charged back up again)
Something about it not causing plating on the anode material. Which in turns make Anode and cathode cheaper to make.
Cheap and safe in theory also not a fire hazard to transport. Energy density not so gucci tho.
If it counts wh down to zero volts half of it isn’t very usable. The other types are interesting but after seeing some of the research I think li-ion especially molicels are going to be our best option for at least a decade.
Like most chemistries these are best suited for very specific purposes. For example, energy storage where there’s lots of space and many thousands of inexpensive, non-volatile cells are needed.
Sure, there are many possible ways these cells can be used but different chemistries really shine for certain applications.
Someone actually made an esk8 with a sodium pack on the Reddits