A different kind of nuclear power

Betavoltaics is an alternative energy source in which the beta decay of a radioactive element, such as strontium-90, is used to generate a cascade of free radicals in aqueous solution and platinum-coated titania nanoparticles are used to tap an electric current from the process. Researchers at the University of Missouri suggest that such a device might have applications in space exploration in circumstances when solar-powered photovoltaics are inadequate or in longer-lasting batteries for electric vehicles.