Donut Lab, a Finnish startup, has emerged in the battery technology arena with claims of a revolutionary solid-state battery capable of large-scale production. Announced recently, these batteries promise rapid charging, high energy density, and the ability to withstand extreme temperatures, all while being cheaper and more environmentally friendly than conventional lithium-ion batteries. Such advancements have the potential to significantly impact the electric vehicle (EV) industry, propelling it toward a future where longer ranges and quicker charging times are the norm.
However, skepticism looms over these bold assertions. Solid-state batteries, which replace traditional liquid electrolytes with a solid material, have been highly anticipated but notoriously difficult to perfect. Major automotive and battery manufacturers, including Toyota and CATL, have been striving to bring this technology to market for years. As the industry sees progress with semi-solid-state variations, true solid-state solutions remain elusive. Donut Lab’s announcement at the Consumer Electronics Show (CES) raised eyebrows, particularly with claims of energy densities reaching 400 watt-hours per kilogram and charge times of just five minutes. Such figures contradict established scientific principles, leading many experts to question the viability of their technology.
In response to the doubts, Donut Lab is launching a video series titled “I Donut Believe,” aimed at substantiating their claims through third-party testing results. Early tests indicate impressive charging capabilities, with cells reaching 80% capacity in approximately four and a half minutes. However, concerns regarding thermal management persist, as the cells exhibited significant heating during the process. Despite the excitement surrounding Donut Lab’s innovations, questions remain about the long-term performance and reliability of their batteries. As the countdown continues for further announcements, the industry watches closely, eager to see if this ambitious startup can deliver on its promises or if it will become another chapter in the ongoing saga of battery technology advancements.
Source: This company claims a battery breakthrough. Now they need to prove it. via MIT Technology Review