The UK Space Agency and the National Nuclear Laboratory (NNL) are to collaborate on the world’s first space battery powered by Americium-241
This work, commissioned and funded by the UK Space Agency from NNL, will be delivered in a new £19 million laboratory in Cumbria equipped with next-generation equipment and technology. It will deliver a sovereign supply of fuel for space batteries in the context of a global shortage, enabling the UK and its partners to pursue new space science and exploration missions.
Creating new highly-skilled jobs in the North West of England, it will drive innovation in radiochemistry and separations science and open a new market for the UK space sector.
Atomic space batteries, also known as Radioisotope Power Systems (RPSs), release heat as the radioactivity within them decays. The heat can be used directly to prevent spacecraft from freezing and it can be converted into electricity to power onboard systems. The batteries go on working for decades, without need for maintenance over the many years in which a spacecraft could be travelling.
The support from the UK Space Agency follows the UK’s record investment to the European Space Agency for a range of new programmes, including £22 million for ENDURE (European Devices Using Radioisotope Energy), which will use radioisotopes to develop systems for warming and powering spacecraft.
Considered ‘mission critical technologies’ by space agencies in the UK and around the world, all the Apollo missions had an atomic battery in tow, as has every rover that has gone to Mars. Until now, these have been powered by Plutonium-238, a radioisotope produced only in the US, where supply is limited, and Russia, so an alternative is urgently needed.
NNL, the UK’s national laboratory for nuclear fission, has been working on this endeavor since 2009, when its researchers first discovered that Americium-241, an alternative to Plutonium-238, is produced during the radioactive decay of used fuel from nuclear reactors and that it emits power for over 400 years.
With the supply plentiful – the new laboratory is being opened at NNL’s flagship Central Laboratory on the Sellafield site, home to the largest resource of Americium-241 available for extraction in the world – the new collaboration will turn a proven scientific concept into a fully-realised technology. It will be operational within the next four years and is expected to be first used on the European Space Agency’s Argonaut mission to the Moon and for future missions into deep space.
Science Minister George Freeman said:
Professor Tim Tinsley, account director for this work at the National Nuclear Laboratory said:
Dr Paul Bate, CEO at the UK Space Agency said: