Donut Lab's claims are bold, but a new episode of the german "Geladen" podcast just offered a theory that could actually fit the physics.
Expert Dr. Joachim Sann suggests that they could be using organic Quinone cathodes screen printed by CT-Coating AG in Germany.
This could explain everything:
* The Shape: You can screen print a battery layer-by-layer into a donut (or any shape).
* The Density: Quinones are super light, and printing "bipolar stacks" removes the heavy metal foils used in normal EVs.
So maybe it's not vaporware physics… it's just a massive manufacturing gamble to scale it.
Sources:
* Evidence: https://eu3.dh-cdn.net/uploads/db2934/original/3X/2/1/219593247c75df551bcbc17ff9119b4ae0d88c1a.jpeg
* Podcast: https://youtu.be/dk-YsWXVJg0
* Science: https://doi.org/10.1021/jacs.4c17713
by griding
