Nuclear battery that can power spacecraft for 100 years made
Russian researchers have created a battery based on radioactive isotope nickel-63 that has a half-life of 100 years, which could help power deep space missions. The prototype packs about 3,300 milliwatt-hours of energy per gram, which is more than any other nuclear battery based on nickel-63 and 10 times more than commercial electrochemical cells, said researchers.