Understanding the short circuit in solid-state batteries

(mpie.de)

43 points | by hhs 3 days ago ago

9 comments

  • Animats 2 days ago ago

    Like solder dendrites.[1] Same mechanism, different materials.

    [1] https://pubs.rsc.org/en/content/articlehtml/2017/ra/c7ra0436...

    • valianteffort 2 days ago ago

      Isn't protection against dendritic failure (or formation of dendrites) a major sell of solid state batteries?

  • SoftTalker 2 days ago ago

    Describes the mechanism causing the electrolyte cracking and resulting short-circuits (dendrites form at the electrodes and penetrate the solid electrolyte).

    Does not describe a way to prevent it, so solid-state batteries don't seem like a realistic product for now.

    • schaefer 2 days ago ago

      >> Does not describe a way to prevent [dendrites], so solid-state batteries don't seem like a realistic product for now.

      Every lithium battery in use today is susceptible to dendrites. One of the promises of solid state batteries is more safety, not less.

      • SoftTalker 2 days ago ago

        Agree, but as of now it's seems like it's still a promise, not a reality.

        • rcxdude a day ago ago

          This is an article about an academic paper investigating a mechanism behind this effect, it doesn't say anything about the relative viability of the technology in practice.

  • metalman a day ago ago

    this seems to be out of step with what is bieng done today. there are 4 or 5 major manufacturers who are entering production for solid state batteries, useing significantly different designs and technology. The main thing in evaluating battery claims of failure or success is to remember how LARGE the stakes are, which is everything, the worlds whole economy,and this is what drives the research into new battrie technology, and funds the fight to deny,dispute, and delay it's adoption, hey hey!

  • wolfi1 2 days ago ago

    till now I was under the impression, that that was the advantage of solid electrolytes: preventing the dendrites in the first place (being a natural barrier to build dendrites).

    guess I was wrong

    • stronglikedan 2 days ago ago

      Yeah, same. Ziroth got some 'splainin' to do!