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 119 points 22 hours 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 33 points 22 hours 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 20 hours ago (1 children)

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

[–] chaogomu@lemmy.world 14 points 19 hours ago

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.

[–] Telorand@reddthat.com 6 points 21 hours 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.)