Comment on Lithium-free sodium batteries exit the lab and enter US production

TheObviousSolution@lemm.ee ⁨1⁩ ⁨month⁩ ago

• August27th@lemmy.ca ⁨1⁩ ⁨month⁩ ago

  explosive hazard

  Can you elaborate on that? I was just reading the data sheet for these batteries, and these are tested with a ballistic penetration test, resulting in no fire.

  I’m presuming this concern is from watching videos of elemental sodium reacting with water, which stands to reason, but I’ve not heard of exploding batteries

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  • TheObviousSolution@lemm.ee ⁨1⁩ ⁨month⁩ ago

    Just my impression on seeing videos of these tests on videos, which seem to result in the battery exploding violently and essentially escaping any attempt at confinement instead of catching fire. www.youtube.com/watch?v=W1ya_ls1zkA

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    • FartsWithAnAccent@fedia.io ⁨1⁩ ⁨month⁩ ago

      That's way less extreme than I would've expected.

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      • TheObviousSolution@lemm.ee ⁨1⁩ ⁨month⁩ ago

        What were you expecting? It’s literally an explosion. Add a few thousand of them in row in an EV battery.

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    • August27th@lemmy.ca ⁨1⁩ ⁨month⁩ ago

      Interesting. I wonder how that compares to a similar Li-ion cell. Also it’s a shame there wasn’t a close-up on the markings of the battery to know what it is exactly. I don’t imagine all cells are equal.

      The battery packs from the article, for instance, are not constructed from cylindrical cells, but from large thin and flat square cells. The cathode material appears to be unique as well, as far as I can tell; who knows what’s in those blue cylindrical cells.

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      • TheObviousSolution@lemm.ee ⁨1⁩ ⁨month⁩ ago

        You can look at other videos in his channel that answer your doubts. 18650 battery cells are usually connected together into battery packs and BMS, and the industrial process is pretty standardized. Just like Li-ion you can have different cell structures, but the inside remains the same.

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  • AdamEatsAss@lemmy.world ⁨1⁩ ⁨month⁩ ago

    No fire could have occured during the penetration test because the resulting explosion removed all oxygen from the surrounding environment. -s

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• RaoulDook@lemmy.world ⁨1⁩ ⁨month⁩ ago

  Sodium Ion batteries are nonflammable. They are safer than most of what we already use.

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  • TheObviousSolution@lemm.ee ⁨1⁩ ⁨month⁩ ago

    Guess reading comprehension is not your forte.

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    • RaoulDook@lemmy.world ⁨1⁩ ⁨month⁩ ago

      I’ve probably read more books than you’ve ever smelled. So why don’t you take a big whiff of farts and think on that?

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      • TheObviousSolution@lemm.ee ⁨1⁩ ⁨month⁩ ago

        And a shining personality to boot …

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