Donut Lab, the Finnish startup, has successfully demonstrated through independent testing that its solid-state battery technology is indeed a battery, not a supercapacitor as some had speculated. The company faced doubts about whether its battery could truly deliver on its energy storage claims, given the similarities in charging and discharging speed with supercapacitors.
The latest test, conducted by VTT Technical Research Centre of Finland, focused on evaluating the battery’s charge retention over an extended idle period. After 10 days of monitoring, the solid-state battery demonstrated remarkable stability, retaining 97.7% of its energy capacity.
Despite a minor initial voltage drop attributed to chemical stabilization, the battery maintained its energy levels, debunking theories suggesting it might function as a supercapacitor. Donut Lab’s CEO, Marko Lehtimäki, emphasized the significance of these results, refuting claims that their technology could only be achieved with supercapacitors.
This successful test further validates Donut Lab’s solid-state battery technology, showcasing its potential for long-term energy storage applications. The distinction between supercapacitors and batteries is crucial, highlighting the unique capabilities and advantages offered by Donut Lab’s innovative solution.
Source: The Verge