Comment on Toyota nears mass production of solid-state batteries

• bernieecclestoned@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

  The potential benefits are enough for Samsung to be building a pilot line. That’s an investment, a bet and there are reasons why:

  Higher energy density, which means more power in a smaller size and weight.

  Higher safety, as the solid electrolyte is non-flammable and less prone to catch fire.

  Shorter charging times, as the solid electrolyte allows faster movement of ions.

  A wider range of operating temperatures, as the solid electrolyte is more stable and less affected by heat or cold.

  Longer lifespan, as the solid electrolyte reduces the degradation of the electrodes

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  • drdabbles@lemmy.world ⁨1⁩ ⁨year⁩ ago

    Higher energy density

    Nobody’s demonstrated this in real life yet.

    which means more power in a smaller size and weight.

    You’re conflating two metrics, which doesn’t bode well for this conversation. Gravimetric and volumetric densities are different, and so far solid state batteries don’t have an advantage on either front. The hope is that they will have a gravimetric density advantage at some point, but not necessarily volumetric.

    Higher safety

    I’ve already explained to you that existing LiB cells use non-flammable electrolytes, so this isn’t an advantage. You’re a decade behind the state of the art.

    Shorter charging times

    Which again hasn’t been demonstrated by anybody in real life yet.

    as the solid electrolyte allows faster movement of ions.

    Intercalation is still the slowest part of the transfer, and solid electrolyte does nothing for that. What might improve that is polymer doped cells, but so far that’s been another complete disaster.

    A wider range of operating temperatures

    Again the electrolyte is only a part of this equation. And while it doesn’t freeze like older LiB electrolyte would, we’re so far past this problem in most applications that nobody even cares anymore.

    Longer lifespan

    Nope. Every demonstration so far has VASTLY shorter cycle lifetimes, which is further exacerbated by the worse gravimetric density. I’m really not sure where you do any of your research, but reading press releases is rotting your mind with marketing hype.

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    • bernieecclestoned@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

      From the people who are putting there money into it.

      www.samsungsdi.com/column/…/56462.html

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      • drdabbles@lemmy.world ⁨1⁩ ⁨year⁩ ago

        On fact LFP is “new” and it’s selling. My take is that idiotic developments with three decades of failure don’t reach the market.

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