The EV battery maker is making progress on industrializing its solid-state battery. Is it a buy?Electric vehicles (EVs) are poised to revolutionize travel. Yet, like any trailblazing technology, EV batteries have a way to go before widespread adoption is commonplace.QuantumScape (QS -1.04%) is a company at the forefront of battery innovation. Its mission is simple: To overcome the limitations of modern lithium-ion battery technology and pave the way for a cleaner, electrified future. The company made news e ...