Nuclear micro-batteries could power sensors nonstop in space and ocean missions

DARPA is funding a $2.8 million project to develop nuclear-powered radiovoltaic batteries that convert radioactive decay directly into electricity, eliminating the need for recharging or maintenance. Led by the University of Missouri, the research aims to create compact devices producing 10 watts per kilogram for remote sensors in space missions and deep ocean environments. Using radiation-resistant gallium oxide semiconductors, these batteries could operate continuously for months or years in extreme conditions where traditional power sources fail.