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Keep in mind that due to size these are only viable for industrial or utility grade storage. Not great for cars, devices, or probably houses.
The video says it's 175 kwhr per kg compared to 185 for LFP that's already used in some cars. Gold standard is Lion at 300. Volumetric is the same ratios.
So it's usable in cars and absolutely immediately useable in homes.
Sodium batteries generally have poor round-trip efficiency. This won't be game-changer for home or solar use unless CATL can solve that problem.
Google says 80% compared to up to 95% for LifePO4. Extra 15% cost for waste heat during charging vs 10x cheaper battery.
CATL first uses for the tech are literally car batteries. Your info looks to be outdated. The energy density of these new sodium batteries is apparently just 5% less than current lithium batteries used in electric cars.
The platform is called naxtra. They are also using it in their mixed battery car batteries called Freevoy that are primarily sodium, but also lithium.
The link above is the transcript of the posted video. It covers both electric car platforms.
Yes, outdated info then.
Edit: sounds pretty magical that they're significantly improved in nearly every way. 10x cheaper, over twice the charge cycles, more temperature tolerant, and only slightly less capacity.
It'll be interesting to see if they can really deliver all this.
Aren't the current models only about half as dense as lithium Ion?
Taking up twice the space for a tenth of the cost seems like a pretty acceptable trade-off for the house scenario
Yes, it's a great trade off, for particular applications.
Could be used at your house for solar power backup during the night?
Yeah, just double or so the amount of space you'd need for lifepo4. Good if you have some space
Are they as safe as lifepo4?
Safer.