Lithium-ion batteries are used for electric cars, but they don’t pack enough power for other critical sectors, such as aviation, heavy trucking, and marine transport. Richard Wang, 33, founded Cuberg to address this problem. He’s developed lithium-metal batteries, which have extremely high energy density, with ease of manufacturing in mind. “These advanced batteries are critical for accelerating the electrification and decarbonization of the transportation sector,” he says. Swedish battery maker Northvolt acquired his company in 2021, and Wang says Cuberg is now working toward its first demonstration flight with partners in the electric aviation sector.