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.

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

As part of its 'I Donut Believe' campaign, Finnish battery developer Donut Lab has published further independent test results for its disputed solid-state ...

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

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

Donut Lab, a California-based startup developing solid-state battery technology, has drawn intense attention and sharp criticism over claims that its donut-shaped cells can outperform conventional ...

For nearly two decades, two-dimensional (2D) semiconductors have been studied as a complement or possible successor to silicon transistors, promising smaller, faster and more energy-efficient ...

At CES, Donut Lab presented a solid-state battery allegedly ready for mass production. However, the impressive specifications ...

Solid-state batteries spark a global EV arms race as automakers and startups compete to unlock ultra-fast charging and the ...