CATL says next-gen sodium-ion battery supports 500 km range, readies for 2026 mass production (carnewschina.com)
from schizoidman@lemmy.zip to technology@lemmy.world on 18 Sep 09:13
https://lemmy.zip/post/48958996

cross-posted from: lemmy.zip/post/48958993

energy density of 175 Wh/kg

CATL explained that sodium-ion batteries have slightly lower energy density than lithium-ion batteries but provide distinct advantages in low-temperature performance, carbon footprint, and safety.

#technology

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lime@feddit.nu on 18 Sep 09:24 next collapse

“slightly lower” == 2/3rds, apparently. the model 3’s pack is 250Wh/kg. also, 500km range in what? the only way you could fit an equal-range battery in a contemporary compact vehicle like the model 3 would be if it had almost double the density of Li-ion.

ExcessShiv@lemmy.dbzer0.com on 18 Sep 09:44 collapse

The model 3 is not a compact vehicle…it’s a regular size sedan.

lime@feddit.nu on 18 Sep 09:49 collapse

it is apparently D-segment, yeah. i have a C-seg car and have found the model 3 to be very similar in size, but maybe that’s just a matter of the height making it look smaller.

davidgro@lemmy.world on 18 Sep 10:23 next collapse

I really hate how all these headlines give battery capacity as a distance, as though that was a meaningful measure or allowed comparing different technologies.

Theoriginalthon@lemmy.world on 18 Sep 10:41 collapse

But it’s all stupid people and marketing people understand more=better cheaper=better. I think it’s why ev adoption has been so poor, questions I get asked are what’s the range like? Doesn’t it take forever to charge? And aren’t they really expensive?

BoloMKXXVIII@piefed.social on 18 Sep 10:25 collapse

They are cheaper and the low temperature performance is better than LFP, but the round trip efficiency is less than LFP.

CompactFlax@discuss.tchncs.de on 18 Sep 11:58 next collapse

As long as the efficiency is outweighed by price, it could move us in the right direction. Hopefully we can pick up the efficiency in time. These would also be good for my future load-shifting (charge during off peak, low carbon electricity) and maybe solar system at home.

ShadowRam@fedia.io on 18 Sep 11:59 collapse

Question is.... How much cheaper...

LFP is almost at the price point we could all have a freezer sized battery pack in our house, drastically changing the grid, and allowing a place for all that wind/solar to store energy.

If Sodium is a fair chunk cheaper, then it will totally be worth buying a house battery pack. Buying energy on the cheap at certain times of day, and using the battery when energy prices are high.

DeadPixel@lemmy.zip on 18 Sep 12:14 collapse

Potentially 1/10th the price according to this video I stumbled on about it a couple of days ago!

youtu.be/Wf84NJSiAeU