![]() ![]() The major challenge has been finding a replacement for another key battery component, the separator, Venkat Srinivasan, the director of the Argonne Collaborative Center for Energy Storage Science, told Wired. This would obviously dramatically increase the energy density of the battery and is the reason scientists and engineers have been striving after the idea for decades. The promise of a solid-state lithium metal battery is that you can swap out that graphite anode for one made of pure lithium and do away with the liquid electrolyte in favor of a solid one. Today’s lithium-ion batteries rely on a liquid electrolyte to ferry lithium ions between an anode (the negative electrode) made of graphite and a cathode (the positive electrode), which can be made from a variety of materials. “ We believe that the performance data we’ve unveiled today shows that solid-state batteries have the potential to narrow the gap between electric vehicles and internal combustion vehicles and help enable electric vehicles to become the world’s dominant form of transportation,” Jagdeep Singh, founder & CEO of QuantumScape, said in a press release. The data shows the batteries can charge to 80 percent capacity in just 15 minutes, ha ve nearly double the energy density of top commercial lithium-ion cells, retain more than 80 percent of their capacity after 800 cycle s, and don’t set on fire ( something lithium-ion batteries have a habit of doing ). Now, though, the company has released performance results-and people are starting to pay attention. So when battery startup QuantumScape announced in September that it had cracked the “Holy Grail” of battery technology-a solid-state lithium metal battery-it didn’t generate much buzz. ![]() Its balance of cost and energy density are hard to beat, and with prices still dropping fast, it’s the go-to technology for everything from smartphones to drones. But the release of test results from a startup building a new solid-state battery suggests we may soon blast past that barrier.Ĭlaims of “revolutionary” new battery technologies are a dime a dozen these days, but none so far have come close to knocking lithium-ion of f its perch. The biggest barriers to widespread adoption of electric vehicles are their limited range and long charging times compared to gasoline cars. ![]()
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