this post was submitted on 23 Oct 2025
324 points (98.8% liked)

Technology

76304 readers
2947 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related news or articles.
  3. Be excellent to each other!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
  9. Check for duplicates before posting, duplicates may be removed
  10. Accounts 7 days and younger will have their posts automatically removed.

Approved Bots


founded 2 years ago
MODERATORS
(page 2) 50 comments
sorted by: hot top controversial new old
[–] Telemachus93@slrpnk.net 103 points 1 day ago (4 children)

Nothing factually wrong with the article, but it has this sound of "this technology will solve all our problems" to it that I find highly problematic. Seven out of nine planetary boundaries are exceeded, climate change just being one of them. And all of them are exceeded because of our wasteful and growth-oriented way of life.

[–] Diplomjodler3@lemmy.world 11 points 23 hours ago (34 children)

We can change our technology to be more sustainable or we can regress to a pre-industrial society with 90% of the population dying in the process. Which do you prefer?

[–] thinkercharmercoderfarmer@slrpnk.net 7 points 22 hours ago (1 children)

Question: would I have to give up my exploitative companies that fuel my bid to become the first King of Internet? Because that's kind of a dealbreaker for me.

[–] Diplomjodler3@lemmy.world 4 points 21 hours ago (2 children)

What are you talking about, you filthy usurper? I'm the only legitimate king of the internet!

load more comments (2 replies)

The world isnt binary. There are plenty of options in between those two. We could reduce our global emissions drastically without any noticeable difference in quality of life for most people. There is so much junk and single use stuff being produced that we could replace or simply stop producing. Banning all forms of commercial AI would hurt literally nobody except the idiots that decided to make it their career. If governments were serious about fighting climate change they would just take control of large parts of the industry and force them to stop making pointless shit that nobody actually needs.

[–] devfuuu@lemmy.world 1 points 17 hours ago
load more comments (31 replies)
load more comments (3 replies)
[–] Simulation6@sopuli.xyz 13 points 22 hours ago

The article has so many acronyms in it, I had to give up reading it. I assume this isn't just cat like typing?

[–] GreenShimada@lemmy.world 23 points 1 day ago* (last edited 3 hours ago) (1 children)

As bullish as I am on Sodium-ion batteries, only very recently did researchers figure out how to boost the charge capacity, making any attempted commercial models in use so far nice, but not the final form where normies are buying them from Home Depot.

The Sehol car mentioned is a niche configuration of a common model, because the Li-ion model goes farther between charges. Other than the launch in 2023, and articles recycling the same info, find me 1 article that doesn't use words like "could" or "will" or "might" about sales of this model? Same thing for the BYD Seagull with Na-ion batteries. It's all greenwashing news where if you dig at it even slightly, you see how not real any of it is.

It's closer than it was 5 years ago, but it's still not a "revolution" by any means.

[–] timroerstroem@feddit.dk 8 points 19 hours ago (1 children)
load more comments (1 replies)
[–] supersquirrel@sopuli.xyz 32 points 1 day ago* (last edited 1 day ago) (1 children)

HiNa supplied sodium-ion batteries for JAC Motors in 2023. Early batteries had lower gravimetric energy density (145 Wh/kg) and volumetric energy density (330 Wh/liter) than LFP, but sodium-ion batteries have already improved since then. They have outstanding temperature range, yielding 88% retention at -20°C. For reference, the discharge capacity of NMC at 0°C, −10°C and −20°C is only 80%, 53%, and 23% of that at 25°C. The HiNa batteries had a cycle life of 4,500 cycles with 83% retention and a 2C charge rate, but even better sodium-ion batteries are on their way.

...

These developments point the way to much more. The cost of sodium battery materials is much lower than for any lithium battery. There are no resource bottleneck materials like cobalt or lithium to contend with. In addition, aluminum can be used for electrodes, whereas lithium requires copper for one of the electrodes. Carbon or graphite and separator materials will be similar, but in all other respects, sodium has much lower material costs. Compared to LFP, sodium does not require phosphorous, a substance that is almost exclusively sourced from one state in north Africa, nor lithium, a relatively abundant but more expensive substance than sodium. LFP cannot compete on material costs or temperature range, and both BYD and CATL expect to phase it out first in energy storage. ‌

[–] progandy@feddit.org 15 points 1 day ago* (last edited 1 day ago) (1 children)

Early batteries had lower gravimetric energy density (145 Wh/kg) and volumetric energy density (330 Wh/liter) than LFP, but sodium-ion batteries have already improved since then.

OK, and where are the new numbers? 1% better, but still much worse than lfp?

Edit:a bit later they mention 175 Wh/kg and 10,000 lifetime cycles for some catl cells, that is not too bad, but still not great with lfp at about 200 Wh/kg which still is less than ~~Lithium Ion~~ NMC.

[–] Telemachus93@slrpnk.net 10 points 1 day ago (1 children)

with lfp at about 200 Wh/kg which still is less than Lithium Ion.

LFP is a lithium-ion technology. You probably meant "worse than NMC", which is another, older, higher density but less safe lithium-ion technology.

[–] progandy@feddit.org 4 points 1 day ago

Right, thanks. did not remember that name and searching yielded articles writing it like that so I went with it.

[–] shalafi@lemmy.world 10 points 1 day ago (1 children)

I got a LIPO4 battery to run my tiny plastic boat or canoe with a trolling motor, most amazing performance I've ever seen. Hours of full thrust, never dropped below 20% power. So what's up with that tech?

[–] Valmond@lemmy.world 14 points 1 day ago (1 children)

10.000 charge cycles.

And cheaper, hopefully.

[–] girthero@lemmy.world 4 points 20 hours ago* (last edited 17 hours ago)

I think it will displace lead acid use case first where its lighter in the same form factor and more resilient in cold. Already seeing small engine batteries. You can buy a car battery today on amazon but i understand it doesn't play welll with alternator regulators, but that can change with retrofits or automakers adapting smarter regulators.

load more comments
view more: ‹ prev next ›