Scientists and engineers from the UK Atomic Energy Authority (UKAEA) and the University of Bristol have developed the world’s first carbon-14 diamond battery, a groundbreaking energy source with the potential to power devices for thousands of years.
This innovative battery harnesses the radioactive isotope carbon-14, commonly known for its role in radiocarbon dating, to produce energy through a diamond structure. The battery’s extraordinary longevity and durability make it suitable for various transformative applications.
One significant use is in medical devices such as ocular implants, hearing aids, and pacemakers. The bio-compatible design minimizes the need for replacements, reducing discomfort and risks for patients.
Additionally, diamond batteries are ideal for extreme environments on Earth and in space, where replacing traditional batteries is impractical. They can power active radio frequency (RF) tags for decades, enabling the tracking and identification of devices like spacecraft and payloads, while also cutting costs and extending operational lifespans.
Sarah Clark, Director of Tritium Fuel Cycle at UKAEA, highlighted the unique benefits of this emerging technology: “Diamond batteries offer a safe, sustainable way to provide continuous microwatt levels of power. By encasing small amounts of carbon-14 within manufactured diamonds, they deliver reliable energy safely over long periods.”
The carbon-14 diamond battery generates power by capturing fast-moving electrons produced during the radioactive decay of carbon-14, which has a half-life of 5,700 years.
Unlike solar panels that convert light into electricity using photons, these batteries rely on electrons within the diamond structure for energy generation.
Professor Tom Scott, a materials expert at the University of Bristol, emphasized the wide-ranging potential of this innovation: “Our micropower technology supports diverse applications, from space technologies and security systems to medical implants. We’re eager to explore these opportunities alongside industry and research partners in the coming years.”
The battery’s development involved constructing a plasma deposition rig at UKAEA’s Culham Campus. This specialized apparatus is essential for growing the diamond material and reflects UKAEA’s expertise in fusion energy research, which has significantly contributed to accelerating innovations in related fields.
This breakthrough marks a significant step toward creating safer, longer-lasting, and more sustainable energy solutions.
Philip Carter for Rough&Polished from London
