When Donut Lab first announced its solid-state battery earlier this year, there was some speculation around whether the Finnish startup had actually produced a supercapacitor, which is a much shorter-term form of electrical storage. Supercapacitors can charge and discharge quickly, similar to Donut Lab's claimed solid-state battery. But supercapacitors are totally different from batteries in terms of energy storage capacity and long-term use. Was Donut Lab's battery actually just a supercapacitor in disguise?
Олег Давыдов (Редактор отдела «Интернет и СМИ»)
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Москвичей предупредили о резком похолодании09:45
The museum confirmed the authenticity after studying the paints, which fit with those used by Rembrandt during that period, and the painting technique and build-up of layers, which are also comparable with his other early works.