Industry
Donut Lab solid-state battery claims questioned as tests suggest lithium-ion cell
An investigation has found that core technology touted by Donut Lab as a next-generation solid-state battery may in fact be a conventional lithium-ion battery. The findings, based on analysis of voltage curves, cell swelling data and estimated energy density, have fuelled controversy over technology validation. Questions have also been raised about the supply chain, commercialisation claims and fundraising. Local reports said Finnish financial authorities and investigative agencies are reviewing the matter.
