Donut Lab solid-state battery retest by Finland’s VTT shows capacity rising to 110% at 80C, but weight data is still missing.

VTT's second independent test shows Donut Lab's solid-state cell delivered 110% capacity at 80°C and survived 100°C discharge, but key claims remain unproven.

The individual cell charged in about five minutes in an independent test. But can it do that at the pack level over many ...

Lithium-ion batteries with liquid electrolytes are more susceptible to extreme heat. If a liquid battery gets too hot, the liquid can vaporize and catch fire — a process called thermal runaway. And at ...

Two separate Chinese efforts are touting advances in solid-state (and hybrid solid-state) electric-vehicle batteries, including test-vehicle range claims above 1,000 kilometers on a single charge. One ...

Independent high-temperature testing suggests the Donut Battery doesn’t just survive extreme heat, it improves efficiency — potentially rewriting the rulebook on EV battery safety and performance.

VTT testing says Donut Lab’s “solid-state” battery likely matches lithium-ion; energy density measured at 298 Wh/kg, claims ...

The Donut Lab solid-state battery was heated to the boiling point of water. Here’s what happened next.

Researchers at Empa and EPFL have reported a stretchable, silicone-based solid electrolyte aimed at addressing a persistent ...

Since announcing earlier this year that it was on the cusp of a major battery breakthrough, Finnish startup Donut Lab has faced a lot of questions, and plenty of skepticism, about its production-ready ...

Yun Jung Lee reflects on her path to solid-state battery research, shaped by curiosity, interdisciplinary work and focus on ...