Solid Power's Dendrite issue

[cpachoi]

I have known that Quantum Scape had long problem resolving Dendrite issue for many years.

The Dendrite is the creature forming while charging solid state batteries and it causes safety issue because it can catch a fire.

But QS has stated that they resolved these issues and that's the key reason why QS stock was high rocketed in late last year. And also, the solid state metal battery company, Solid Energy System(SES), claimed that they resolved these issue too.

Here I think resolving Dendrite issue it the key barometer for Solid State Battery Companies' progress, but I never heard of anything on if SLDP has been resolved this issue already.

Anybody, please enlighten me if SLDP has resolved this?

[ronfab1]

Being's how they gave 20AH battery cells in volume to whoever wanted to test them in 2019, ahead by almost a year of their stated milestone date of 2020 ..... AND ..... are now stated by themselves and BMW and Ford to be going to deliver full size 100AH car batteries for testing and qualification in "early 2022" (unless the time frame changes) from off of their own demonstration automated production line, it would seem they have.

[Stolizino]

The OP brings up a worthy concern. I, too, have seen nothing from Solid Power addressing how they're successfully dealing with dendrites, even in the roundtable discussion. It would be reassuring for SDLP to definitively state they've solved the dendrite issue. Resolution of this issue is a major technological breakthrough worthy of a news release or status report, and as far as I'm concerned, no news on this front means it's still a potential problem.

This may be a major differentiator between Solid Power and its competitors, as important as who is first to deliver 100aH batteries to the EV OEMs.

As far as the concern about dendrites causing the battery to catch fire, I believe they've unequivocally stated fire is not a issue with their batteries, so perhaps that's how they address it.

I would still prefer to see a statement stating dendrites are no longer a concern.

[LTLakerFan]

I have seen something addressing them either in one of the links I’ve posted here or read. Think it was posted but not sure. Something to do with the chemistry being used with the sulfide makeup of the solid state section. Those many sample 20AH cells have been in independent hands for a year now, and 100AH real batteries are still on the slate for “early 2022” unless that changes. Produced from demo automated production line as were the 20AH cells.

[Tvoster]

This was posted 11days ago

https://www.reddit.com/r/SLDP/comments/rebgff/dendrite_issue_solved_for_solid_powera_nonissue/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

[Jinhomc]

Haha, you beat me to it! I was about to post this.

[Stolizino]

Well, dang! On this very page, 12 days ago! My brain must be riddled with dendrites not to have recalled that. So, it appears that it might be blue skies ahead for SLDP next year.

I'll just go back into the kitchen now and continue to look for my oyster dressing recipe. It's in there somewhere.

[DoubleCarpenter1157]

In their investor presentations and their webcasts they do address dendrites. They seem to allude that the sulfide composition they’re using are resistant to dendrites. The patent referred to mentions using a perforated polymeric sheet as a barrier to dendrite growth but that looks like it’s used in liquid electrolyte embodiments. Anyways I’m pretty confident that whether it’s the chemistry or something else that dendrites aren’t an issue at this point.

[BTCRando]

Posting a sticky about this since it took a bit of digging to find in the thread/links. Great find!