Donut Lab's 'solid-state' battery found to be lithium-ion

Ziroth's investigation confirms Donut Lab's battery is lithium-ion, not solid-state. Electrochemical data from voltage curves and cell expansion shows it matches lithium-ion, not the claimed 400 Wh/kg, 100,000-cycle, 5-minute charge. The company raised $25 million from 1,300 investors based on false claims. The technology traces to CT Coatings, with hidden companies under NDAs.