this post was submitted on 09 Jun 2026
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Donut Lab's miracle battery found to be a fraud, investigation claims (interestingengineering.com)
submitted 1 day ago by Some_Emo_Chick@lemmy.world to c/technology@lemmy.world
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[–] homesweethomeMrL@lemmy.world 121 points 1 day ago (1 children)

Industry experts who met with CT Coatings representatives doubted their technical skills. Julian Zanau from the Fraunhofer Research Institute recalled concerns following discussions with company officials.

“The first impression I got was that these people have no idea how a battery actually works. They were talking about no rare earth metals in their batteries and therefore no lithium, and to any chemist lithium has nothing to do with rare earth minerals.”

🔥

[–] chaogomu@lemmy.world 36 points 1 day ago (3 children)

The running theory I had seen was that they were licensing out someone else's tech, and then claiming it as their own.

And now this article shows that to be more true than I had thought.

Meanwhile, there's a company out of Taiwan doing this, https://www.youtube.com/watch?v=xQFVIs4leig

The guy cuts a cell in half with a pair of scissors, and as soon as the scissors are pulled away the little LED light comes back on.

[–] testaccount789@sh.itjust.works 8 points 1 day ago (1 children)

These seem like ones tested by GreatScott 7 years ago: https://youtu.be/kJXRyWQgOY4

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

Same company, their newest cells are based on that tech, but with 7 years of advances, so 360Wh/kg. Which is about the same as most other top end Lithium-ion batteries, just solid-state rather than a liquid electrolyte.

[–] Axolotl_cpp@feddit.it 1 points 7 hours ago (1 children)

There is some specific reason why we don't use it? Or they last too long so companies don't want to sell them?

[–] chaogomu@lemmy.world 2 points 5 hours ago

They're brand new at that energy density. They just haven't made their way into many products.

ProLogium is building a gigafactory in France.

The newest batteries also seems to solve the charging issues, which was rather slow.

[–] Telorand@reddthat.com 6 points 1 day ago

That's actually super cool, and more in line with what one might expect from the gradual progression of solid state energy storage.

(Also, I'm a layperson, so my expectations should be taken as such.)