The U.S. made a breakthrough battery discovery — then gave the technology to China

A worker works on a power battery production line at a workshop of a battery production company in Hefei Economic and Technological Development Area in Hefei, east China's Anhui Province, July 29, 2022. In recent years, Hefei has promoted the power battery industry, a crucial part of new-energy vehicles industry, by developing and introducing power battery production companies. (Photo by Liu Junxi/Xinhua via Getty Images)